Daily Archives: June 23, 2017

Google on track for quantum computer breakthrough by end of 2017 – New Scientist

Posted: June 23, 2017 at 6:48 am

Ramping up the qubits

Julian Kelly/Google

By Matt Reynolds

Google is leading the pack when it comes to quantum computing. The company is testing a 20-qubit processor its most powerful quantum chip yet and is on target to have a working 49-qubit chip by the end of this year.

Qubits, or quantum bits, can be a mixture of 0 and 1 at the same time, making them potentially more powerful than classical bits.

And if everything goes to plan, the 49-qubit chip will make Google the first to build a quantum computer capable of solving certain problems that are beyond the abilities of ordinary computers. Google set itself this ambitious goal, known as quantum supremacy, in a paper published last July.

Alan Ho, an engineer in Googles quantum AI lab, revealed the companys progress at a quantum computing conference in Munich, Germany. His team is currently working with a 20-qubit system that has a two-qubit fidelity of 99.5 per cent a measure of how error-prone the processor is, with a higher rating equating to fewer errors.

For quantum supremacy, Google will need to build a 49-qubit system with a two-qubit fidelity of at least 99.7 per cent. Ho is confident his team will deliver this system by the end of this year. Until now, the companys best public effort was a 9-qubit computer built in 2015.

Things really have moved much quicker than I would have expected, says Simon Devitt at the RIKEN Center for Emergent Matter Science in Japan. Now that Google and other companies involved in quantum computing have mastered much of the fundamental science behind creating high-quality superconducting qubits, the big challenge facing these firms is scaling these systems and reducing their error rates.

It is important not to get carried away with numbers of qubits, says Michele Reilly, CEO at Turing Inc, a quantum start-up. Its impossible to really harness the power of these machines in a useful way without error correction, she says a technique that mitigates the fickle nature of quantum mechanics.

Ho says it will be 2027 before we have error-corrected quantum computers, so useful devices are still some way off. But if Google can be the first to demonstrate quantum supremacy, showing that qubits really can beat regular computers, it will be a major scientific breakthrough.

Read more: Revealed: Googles plan for quantum computer supremacy

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Dow Chemical, 1QBit Ink Quantum Computing Development Deal – Zacks.com

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The Dow Chemical Company (DOW - Free Report) and 1QB Information Technologies (1QBit") entered into a collaborative pact to develop quantum computing tools for the chemicals and materials science technology spaces. Financial terms of the deal remain undisclosed.

Dow Chemicals unique innovation capabilities combined with 1QBits leading expertise in the development of applications for quantum computing will speed up the deployment of quantum computing across a number of applications related to the chemical sector.

The partnership will also enhance Dow Chemicals discovery process by building strong fundamental understanding of new chemicals and materials.

1QBit intends to apply breakthroughs in computation to machine intelligence and optimization science through a broadly accessible, hardware-agnostic software platform. The company has been developing new methods for machine learning, sampling, and optimization for the last four years based on reformulating problems to meet the unique requirements of interfacing with quantum computers and leveraging their capabilities.

With this agreement in place, both the companies plan to develop strong capabilities in the quantum computing space and advance their world-class innovation capabilities.

Dow Chemical has outperformed the Zacks categorized Chemicals-Diversified industry over a year. The companys shares have moved up around 18.7% over this period, compared with roughly 16.8% gain recorded by the industry.

Dow Chemical is witnessing signs of positive economic momentum globally, amid sustained geopolitical risks and volatility. The company is also seeing early signs of gradual improvements in consumer-led markets in Latin America. The company believes that the strength of its portfolio along with its focus on consumer-led markets will continue to bode well.

The company is expected to gain from productivity management actions as well as focus on consumer-led markets. Dow Chemical should also benefit from cost synergies associated with Dow Corning Silicones business and its strategic investments in the U.S. Gulf Coast and the Middle East. The planned merger with DuPont (DD - Free Report) is also expected to create significant synergies.

However, Dow Chemicals agriculture business remains affected by weak crop commodity prices and depressed demand in North America. The company also faces feedstock cost pressure and headwinds associated with higher start-up and maintenance costs.

Dow Chemical Company (The) Price and Consensus

Zacks Rank & Stocks to Consider

Dow Chemical currently carries a Zacks Rank #3 (Hold).

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BASF has expected long-term growth of 8.9%.

Chemours has expected long-term growth of 15.5%.

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Google on track to make quantum computer faster than classical computers within 7 months – Next Big Future

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John Martinis, one of Googles quantum computing gurus, laid out Googles stretch goal: to build and test a 49-qubit (quantum bit) quantum computer by the end of 2017. This computer will use qubits made of superconducting circuits. Each qubit is prepared in a precise quantum state based on a two-state system. The test will be a milestone in quantum computer technology. In a subsequent presentation, Sergio Boixo, Martinis colleague at Google, said that a quantum computer with approximately 50 qubits will be capable of certain tasks beyond anything the fastest classical computers can do.

Researchers say that quantum computers promise an exponential increase in speed for a subset of computational chores like prime number factorization or exact simulations of organic molecules. This is because of entanglement: If you prepare entangled qubits, you will be able to manipulate multiple states simultaneously.

New Scientist reports that Google is testing a 20 qubit quantum computer. Alan Ho, an engineer in Googles quantum AI lab, revealed the companys progress at a quantum computing conference in Munich, Germany. His team is currently working with a 20-qubit system that has a two-qubit fidelity of 99.5 per cent a measure of how error-prone the processor is, with a higher rating equating to fewer errors.

For quantum supremacy (Quantum computers faster than current classical comuputers), Google will need to build a 49-qubit system with a two-qubit fidelity of at least 99.7 per cent. Ho is confident his team will deliver this system by the end of this year. Until now, the companys best public effort was a 9-qubit computer built in 2015. A 2014 prototype of a Google qubit (0.6 cm by 0.6 cm) known as a transmon, based on superconducting circuits. Googles quantum computing test will use 49 updated versions of these qubits.

Ho says it will be 2027 before we have error-corrected quantum computers, so useful devices are still some way off. But if Google can be the first to demonstrate quantum supremacy, showing that qubits really can beat regular computers, it will be a major scientific breakthrough.

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Quantum thermometer or optical refrigerator? – Phys.org – Phys.Org

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June 22, 2017 Artist's rendering of a quantum thermometer. Credit: Emily Edwards/JQI

In an arranged marriage of optics and mechanics, physicists have created microscopic structural beams that have a variety of powerful uses when light strikes them. Able to operate in ordinary, room-temperature environments, yet exploiting some of the deepest principles of quantum physics, these optomechanical systems can act as inherently accurate thermometers, or conversely, as a type of optical shield that diverts heat. The research was performed by a team led by the Joint Quantum Institute (JQI), a research collaboration of the National Institute of Standards and Technology (NIST) and the University of Maryland.

Described in a pair of new papers in Science and Physical Review Letters, the potential applications include chip-based temperature sensors for electronics and biology that would never need to be adjusted since they rely on fundamental constants of nature; tiny refrigerators that can cool state-of-the-art microscope components for higher-quality images; and improved "metamaterials" that could allow researchers to manipulate light and sound in new ways.

Made of silicon nitride, a widely used material in the electronics and photonics industries, the beams are about 20 microns (20 millionths of a meter) in length. They are transparent, with a row of holes drilled through them to enhance their optical and mechanical properties.

"You can send light down this beam because it's a transparent material. You can also send sound waves down the beam," explained Tom Purdy, a NIST physicist who is an author on both papers. The researchers believe the beams could lead to better thermometers, which are now ubiquitous in our devices, including cell phones.

"Essentially we're carrying a bunch of thermometers around with us all the time," said JQI Fellow Jake Taylor, senior author of the new papers. "Some provide temperature readings, and others let you know if your chip is too hot or your battery is too cold. Thermometers also play a crucial role in transportation systemsairplanes, carsand tell you if your engine oil is overheating."

But the problem is that these thermometers are not accurate off the shelf. They need to be calibrated, or adjusted, to some standard. The design of the silicon nitride beam avoids this situation by relying on fundamental physics. To use the beam as a thermometer, researchers must be able to measure the tiniest possible vibrations in the beam. The amount that the beam vibrates is proportional to the temperature of its surroundings.

The vibrations can come from two kinds of sources. The first are ordinary "thermal" sources such as gas molecules buffeting the beam or sound waves passing through it. The second source of vibration comes purely from the world of quantum mechanics, the theory that governs behavior of matter at the atomic scale. The quantum behavior occurs when the researchers send particles of light, or photons, down the beam. Struck by light, the mechanical beam reflects the photons, and recoils in the process, creating small vibrations in the beam. Sometimes these quantum-based effects are described using the Heisenberg uncertainty relationshipthe photon bounce leads to information about the beam's position, but because it imparts vibrations to the beam, it adds uncertainty to the beam's velocity.

"The quantum mechanical fluctuations give us a reference point because essentially, you can't make the system move less than that," Taylor said. By plugging in values of Boltzmann's constant and Planck's constant, the researchers can calculate the temperature. And given that reference point, when the researchers measure more motion in the beam, such as from thermal sources, they can accurately extrapolate the temperature of the environment.

However, the quantum fluctuations are a million times fainter than the thermal vibrations; detecting them is like hearing a pin drop in the middle of a shower.

In their experiments, the researchers used a state-of-the-art silicon nitride beam built by Karen Grutter and Kartik Srinivasan at NIST's Center for Nanoscale Science and Technology. By shining high-quality photons at the beam and analyzing photons emitted from the beam shortly thereafter, "we see a little bit of the quantum vibrational motion picked up in the output of light," Purdy explained. Their measurement approach is sensitive enough to see these quantum effects all the way up to room temperature for the first time, and is published in this week's issue of Science.

Although the experimental thermometers are in a proof-of-concept phase, the researchers envision they could be particularly valuable in electronic devices, as on-chip thermometers that never need calibration, and in biology.

"Biological processes, in general, are very sensitive to temperature, as anyone who has a sick child knows. The difference between 37 and 39 degrees Celsius is pretty large," Taylor said. He foresees applications in biotechnology, when you want to measure temperature changes in "as small an amount of product as possible," he said.

The researchers go in the opposite direction in a second proposed application for the beams, described in a theoretical paper published in Physical Review Letters.

Instead of letting heat hit the beam and allow it to serve as a temperature probe, the researchers propose using the beam to divert the heat from, for example, a sensitive part of an electromechanical device.

In their proposed setup, the researchers enclose the beam in a cavity, a pair of mirrors that bounce light back and forth. They use light to control the vibrations of the beam so that the beam cannot re-radiate incoming heat in its usual direction, towards a colder object.

For this application, Taylor likens the behavior of the beam to a tuning fork. When you hold a tuning fork and strike it, it radiates pure sound tones instead of allowing that motion to turn into heat, which travels down the fork and into your hand.

"A tuning fork rings for a long time, even in air," he said. The two prongs of the fork vibrate in opposite directions, he explained, and cancel out a way for energy to leave the bottom of the fork through your hand.

The researchers even imagine using an optically controlled silicon nitride beam as the tip of an atomic force microscope (AFM), which detects forces on surfaces to build up atom-scale images. An optically controlled AFM tip would stay cooland perform better. "You're removing thermal motion, which makes it easier to see signals," Taylor explained.

This technique also could be put to use to make better metamaterials, complex composite objects that manipulate light or sound in new ways and could be used to make better lenses or even so-called "invisibility cloaks" that cause certain wavelengths of light to pass through an object rather than bouncing from it.

"Metamaterials are our answer to, 'How do we make materials that capture the best properties for light and sound, or for heat and motion?'" Taylor said. "It's a technique that has been widely used in engineering, but combining the light and sound together remains still a bit open on how far we can go with it, and this provides a new tool for exploring that space."

Explore further: Fundamentally accurate quantum thermometer created

More information: "Quantum correlations from a room-temperature optomechanical cavity" Science (2017). science.sciencemag.org/cgi/doi/10.1126/science.aag1407

Xunnong Xu et al. Cooling a Harmonic Oscillator by Optomechanical Modification of Its Bath, Physical Review Letters (2017). DOI: 10.1103/PhysRevLett.118.223602

Better thermometers might be possible as a result of a discovery at the National Institute of Standards and Technology (NIST), where physicists have found a way to calibrate temperature measurements by monitoring the tiny ...

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How quantum physics could revolutionize casinos and betting if you can understand it – Casinopedia

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By Ivan Potocki, ContributorPublished: June 22, 2017 07:01 EST

Many of the answers to lifes great questions have been laid at the door of the mega-brained scientists who specialise in quantum physics. Is there evidence of a god? How did the universe begin?

But what about using the theories to revolutionize how we play casinos?

A team of scientists from China and Bristol has come up with the idea of a gambling protocol that doesnt depend on the integrity of the participants. Instead, this new protocol is founded on the idea of rationality the rational notion that both parties will make decisions they perceive give them the best winning chances.

This new protocol is based on the mix of game theory and quantum mechanics, and scientists believe it could find its application in casinos and lotteries sometime in the future.

It is nearly impossible for two players to gamble, putting something of value on the line, without having a third party supervising the game because of the temptation to bend the rules or cheat. This third party is necessary to make sure everything is fair, and everyone keeps their end of the bargain. However, it seems that quantum mechanics has a solution that would remove the need for the third party altogether.

The idea of quantum gambling revolves around the concept of a theoretical machine constructed between two participating players. The machine works based on two important principles: quantum superposition and Heisenbergs uncertainty principle.

The uncertainty principle is a bit hard to understand for people not familiar with quantum mechanics, but it basically states that observing a particle will create changes in its behavior. Quantum superposition means that the particle can be in the two different states at once.

If this sounds confusing, thats because it is.

But, the gist of it all is, it would create a situation where one player knows the state of two particles on his or her side but doesnt know if the states will change by the time they reach the other player. The other player has an option to try and guess the state of the particle hes been sent, or ask for a different one.

In theory, this would create an environment where both players need to adhere to the best strategy, creating Nash equilibrium.

In this situation, they are playing a zero sum game, and there is no need for third parties to supervise the game. Although this idea only exists on paper at this time, scientists believe it can be used to develop a range of new gambling protocols based on quantum mechanics.

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BMW and Volkswagen Try to Beat Apple and Google at Their Own Game – New York Times

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Big data is a challenge for all automakers, but especially German companies because they target affluent customers who want the latest technology.

At the same time, the focus on computing pits the automakers against Silicon Valley tech companies with far more experience in the field, and creates an opening for firms like Apple and Google, which are already encroaching on the car business.

Google has long been working on self-driving or autonomous cars, and Tim Cook, the chief executive of Apple, said this month that the company best known for making iPhones is focusing on autonomous systems for cars and other applications.

That has put pressure on automakers. German companies in particular have already made investments in ride-sharing services, in part to combat the rise of Uber, and are now looking further into the future.

Efforts by Volkswagen, trying to remake itself as a technology leader as it recovers from an emissions scandal, show how far into exotic realms of technology carmakers are willing to go.

Volkswagen, a German company, recently joined the handful of large corporations worldwide that are customers of D-Wave Systems, a Canadian maker of computers that apply the mind-bending principles of quantum physics.

While some experts question their usefulness, D-Wave computers housed in tall, matte black cases that recall the obelisks in the science fiction classic 2001: A Space Odyssey can in theory process massive amounts of information at unheard-of speeds. Martin Hofmann, Volkswagens chief information officer, is a believer.

For us, its a new era of technology, Mr. Hofmann said in an interview at Volkswagens vast factory complex in Wolfsburg, Germany.

First theorized in the 1980s, quantum computers seek to harness the strange and counterintuitive world of quantum physics, which studies the behavior of particles at the atomic and subatomic level. While classical computers are based on bits with a value of either 1 or 0, the qubits in a quantum computer can exist in multiple states at the same time. That allows them, in theory, to perform calculations that would be beyond the powers of a typical computer.

This year Volkswagen used a D-Wave computer to demonstrate how it could steer the movements of 10,000 taxis in Beijing at once, optimizing their routes and thereby reducing congestion.

Because traffic patterns morph constantly, the challenge is to gather and analyze vehicle flows quickly enough for the data to be useful. The D-Wave computer was able to process in a few seconds information that would take a conventional supercomputer 30 minutes, said Florian Neukart, a scientist at a Volkswagen lab in San Francisco.

Such claims are met with skepticism by some experts, who say there is no convincing proof that D-Wave computers are faster than a well-programmed conventional supercomputer. And unlike a quantum computer, a supercomputer does not have components that must be kept at temperatures colder than deep space.

If this were an application where D-Wave were actually faster, then it would be the first time wed ever seen that, said Scott Aaronson, a vocal D-Wave skeptic who is a professor of theoretical computer science at the University of Texas at Austin.

It would be particularly astonishing that this milestone should happen first for a Volkswagen application problem, Mr. Aaronson said in an email.

Volkswagen executives say they will publish the results of their work with D-Wave computers, allowing outsiders to try to debunk them.

If the D-Wave collaboration proves to be a misstep for Volkswagen, it would illustrate the hazards of big data for companies whose main focus for the past century has been the internal combustion engine. It also reflects the stakes for one of the worlds biggest carmakers.

Suppliers are also gearing up for an era of automotive big data. Bosch, the electronics maker based in a suburb of Stuttgart, said Monday that it would invest 1 billion euros, or $1.1 billion, to build a new factory in Dresden to produce chips for a variety of applications, including the sensors used in self-driving cars.

Bosch prefers to build its own chips rather than buy them from a supplier, said Christine Haas, director for connected services at the company. When you have done it yourself, then you have a much deeper understanding of the technology, she said.

Some car companies have decided to concentrate on what they do best and let others handle the computing.

Volvo Cars has been a pioneer in marrying digital technology and automobiles. It has turned to outside providers like Ericsson, a Swedish maker of telecommunications equipment, for computer technology. In May, Volvo said it would install Googles Android operating system in new cars beginning in 2019. And the company is cooperating with Uber to develop self-driving cars.

We are trying to embrace it, said Martin Kristensson, senior director for autonomous driving and connectivity strategy at Volvo, of the challenge from Silicon Valley.

But, like Volkswagen, many are trying to develop capabilities in-house. Mr. Stolle of BMW said that the carmaker which hired more information technology specialists last year than mechanical engineers needs huge data-crunching capability.

The company has a fleet of 40 prototype autonomous cars it is testing in cooperation with Intel, a chip maker; Mobileye, an Israeli self-driving technology company; and Delphi, an auto components supplier.

BMW uses artificial intelligence to analyze the enormous amounts of data compiled from test drives, part of a quest to build cars that can learn from experience and eventually drive themselves without human intervention.

After test sessions, hard disks in the cars are physically removed and connected to racks of computers at BMWs research center near Munich. The data collected would fill the equivalent of a stack of DVDs 60 miles high, Mr. Stolle said.

That is much more than could be efficiently transmitted over the internet to remote data storage facilities operated by outside providers in the cloud.

A large part of the data center has to be on premises, Mr. Stolle said. The amount is so huge it doesnt work in the cloud.

Follow Jack Ewing on Twitter @JackEwingNYT.

A version of this article appears in print on June 23, 2017, on Page B4 of the New York edition with the headline: Europes Car Giants Race to Outsmart Apple and Google.

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What do young Indians think of Donald Trump? – CNN

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His visit comes at a time of immense uncertainty and unpredictability in Indian-US relations.

Earlier this month, he singled out India during his announcement declaring the United States' withdrawal from the Paris Agreement on Climate Change.

Top of the leaders' agenda will be the H1-B visa rehaul, the fight against terror and expanding on bilateral relations with the new administration.

We spoke to five young Indians about the importance of bilateral ties between the two countries and what they make of Trump.

Harshit Tibrewal, 22, is a software engineer working for a start-up. He believes good relations between the two democracies are vital, especially given India's rise in the global order.

"I think the relationship between the US and India is very strong, because a lot of trade happens between the two, a lot of people from here go to work and study there. Both countries are superpowers and Modi going to meet with Trump shows that the relationship is strong and getting stronger. It's very good to have such a good relationship with a strong country."

His sunny outlook comes despite being in an occupation hardest hit by Trump's visa crackdown.

"I don't think it (H1-B visa reform) will affect Indians. Most of these software companies need us," says Tibrewal.

Indian firms like Tata Consultancy Services, Infosys and Wipro use the H-1B program to send thousands of engineers to the US.

Around 70% of the 85,000 H-1B visas issued annually go to Indian workers.

According to Tibrewal, Trump's America First agenda could actually backfire on him -- and the US.

"Indians have great minds of their own. Quoting Bill Gates, 'If I stopped hiring Indians, another Microsoft would have opened in India'. Donald Trump should know this too."

Twenty-year-old Kanika Sethi is a recent commerce graduate. While she understands the importance of relations between India and the US, she's skeptical about Trump's leadership.

"Donald Trump is a rich leader. I can't say whether he is a good or bad leader. But the first thing that comes to mind is money."

Between Modi's election in 2014 and Obama leaving office at the beginning of 2017, the two leaders met eight times. A record for leaders of the two nations. Obama is also the only sitting US President to have visited India twice while in office.

"There's no comparison with Obama. Obama was the best."

Yakita Somani, 20, also a commerce graduate, is more pragmatic about the upcoming visit especially on the hot button topic of H1-B visa restrictions.

"The first preference is given to American people and that's absolutely right. In India, if we protest for our rights, then that's the same thing. Indians there (the United States) who are facing discrimination and inequality, I feel you need to struggle for something. It's their policy and being the most powerful country, they don't need to think about the entire world."

At the same time, she is aware that forging closer ties with the United States is crucial for India.

"I feel America is the most powerful country, so if India is tied up with a country of this position, it will be beneficial i areas such as defense, security and many other things. Our country will become powerful."

Surya Hooda, 22, wants to become a civil servant and is currently studying for his exams.

"India's relations with America are very important. During Obama's time, they were on the rise. Now, Trump and his administration are going back on a lot of policies that the Obama administration employed."

"Trump has pulled back from the Trans-Pacific Partnership (TPP). India was not a part of the TPP so now there's an opportunity where we can directly establish bilateral relations directly with the US so that's a plus point."

Just weeks after coming into office, Trump formally withdrew the United States from the Trans-Pacific Partnership, a 12-nation deal that had been negotiated under Obama.

Twenty-two-year-old Kilang Walling is an engineering graduate.

He describes Trump as a "loudmouth" and "not the kind of person you find in power."

However, like the other young people CNN spoke with, he understands the importance of US-Indian relations, especially in South Asia.

"India is growing in terms of power and the economy. Both India and the US need to cooperate. And because India is surrounded by not so friendly countries like China and Pakistan, India needs the US and the US also needs India because America and China also don't function well."

For Walling, the issue he wants to see most discussed during Modi's visit is the US' withdrawal from the Paris climate accord.

"He (Trump) shouldn't have done that. America being a leader and a forward thinking country, he shouldn't have pulled out."

"I feel very strongly about the Paris deal. How the world is going, how climate change is going. It's essential that every human being needs to worry about this because we need sustainability. It's not only about living today, there are generations to come so we have to worry about this."

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Trump ends his self-made crisis where it started: Twitter – CNN

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It was a surreal new twist to a presidency that has often already stretched the limits of credulity, and has challenged conventions on the decorum and gravity expected in the behavior of the person who holds the office itself.

After weeks of speculation, the President delivered a mea culpa, a step that he had little choice to make, in a somewhat resentful manner, in keeping with his reluctance to ever publicly admit error.

"With all of the recently reported electronic surveillance, intercepts, unmasking and illegal leaking of information, I have no idea ... whether there are "tapes" or recordings of my conversations with James Comey, but I did not make, and do not have, any such recordings," Trump wrote in a pair of tweets.

His statement was followed by a now-typical attempt by the White House to avoid accountability on an embarrassing episode. Trump's choice of Twitter to deliver his message did not expose him to cross-examination or questioning from journalists. The White House, meanwhile, banned live television coverage of its daily briefing, allowing only an audio recording to be broadcast afterward.

There's little doubt that the entire tapes issue represents a serious misstep by the President that put his White House on a perilous political and legal path.

"James Comey better hope that there are no 'tapes' of our conversations before he starts leaking to the press!" Trump tweeted on May 17.

The tweet caused an uproar, immediately raising comparisons with the Watergate-era taping system that caused the downfall of President Richard Nixon, and demands for Trump to immediately hand over any recordings.

If it was an attempt to intimidate Comey, as many have speculated, it backfired spectacularly.

Comey testified to the Senate intelligence committee earlier this month that he saw Trump's tweet and woke up in the middle of the night a few days later, suddenly twigging that any tapes could provide corroboration of his version of conversations with Trump that left him feeling deeply uncomfortable.

The former FBI chief said that as a result of the tweet he asked a friend to share the content of his memos with a reporter, in the hope that it would lead to the appointment of a special counsel.

That special counsel -- Robert Mueller -- who was appointed as a direct result of what now looks like a deeply ill-advised Trump tweet, now poses a serious threat to his entire presidency with an investigation into alleged collusion by campaign officials with Russian interference in the US election, that could branch off in unpredictable directions.

One clear effect of Trump's tweet on Thursday means that the accounting of what happened in conversations between the President and Comey now relies on one man's word against the other. There apparently are no tapes that could confirm what exactly happened in those chats.

But Comey has already handed the special counsel his contemporaneous memos of conversations in which he said Trump asked him to go easy on former national security adviser Michael Flynn, asked him for a pledge of loyalty and wanted him to publicly say that the President himself was not under investigation.

It will now be left to Mueller to decide whether Trump's actions in his interactions with Comey amount to an attempt to obstruct justice.

The original tweet may be considered as evidence as Mueller tries to work out whether the President was trying to intimidate Comey.

Still, the White House stuck to the line that despite the damaging fallout of the tapes episode, the President had no regrets.

"I don't think so," said White House deputy press secretary Sarah Huckabee Sanders, when asked whether Trump now wishes he had not issued the original tweet.

Sanders would not divulge many other details about Trump's motivation in warning of possible tapes of Comey, or why he inflicted a six-week-long mystery on the nation, a period that included him taunting reporters, saying that they were "going to be very disappointed" when the truth was revealed.

"I don't think it was a game," Sanders said, in the off-camera briefing, and appeared to suggest the President's original intent was to press the fired former FBI director to tell the truth.

"I certainly think that the President would hope that the former director would tell the truth, but I think it was more about raising the question of doubt, in general," she said.

But an associate of Trump who spoke to the President this week, told CNN's Jeff Zeleny that "if he doesn't regret this, he should."

The person also said that Trump was amused by all media obsession over the original tweet, raising the possibility that, as so many times before, the President is using conspiracy theories and sparking outrage to dominate the political conversation in Washington -- with himself at the center of the storm.

The manner of Trump's admission that there were no tapes, was consistent with the way in which he has dealt with climb-downs that are personally embarrassing to him during his time in office.

The President is known to be loath to publicly admit that he made a mistake. Last September, for instance, Trump finally repudiated his years-long conspiracy theory that claimed President Barack Obama was not born in the United States.

But the admission came only at the end of a rambling event at his new hotel in Washington that included warm public testimony on his character from veterans.

That admission came with a new conspiracy theory.

"Hillary Clinton and her campaign of 2008 started the birther controversy. I finished it. I finished it, you know what I mean," Trump said, lobbing an unproven allegation against his then Democratic presidential rival.

In the case of his tweet on Thursday, Trump covered his embarrassment by again suggesting something nefarious was underway -- by raising the possibility there was some taping going on in the White House without his knowledge -- that again came without any corroboration.

Trump's critics immediately seized on his admission on the tapes to raise concerns about his suitability for the Presidency.

"There have been a lot of surreal and strange statements by Donald Trump, since he became President. But he seems to have a capacity to outdo himself," Connecticut Democratic Sen. Richard Blumenthal said on CNN.

Trump, as commander in chief, has the authority to know about any covert actions being performed by intelligence agencies or any electronic surveillance in the White House, Blumenthal said.

"To say he has no idea is absolutely preposterous and really an insult to the intelligence of the American people," Blumenthal said.

But other Democrats suggested that they would not necessarily take Trump's word in a tweet to end the episode.

"I prefer to get something in writing," said Adam Schiff, the top Democrat on the House intelligence committee.

The panel had established a deadline of Friday for Trump to hand over any tapes -- a move that may have precipitated his admission on Thursday.

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Donald Trump Does His Best Joe McCarthy Impression – New York Times

Posted: at 6:47 am

But within days, Mr. McCarthys accusation that there was a hidden Communist cabal at the heart of the American government blew up into a bitter national controversy. And before long, Joe McCarthys Wheeling speech had triggered a wave of paranoia and fear mongering that would forever bear his name: McCarthyism.

On June 28, 2016, another Republican politician landed at Stifel, now named Wheeling Ohio County Airport, to campaign here: Donald Trump.

Mr. Trump appeared first that night at a private fund-raiser held just blocks from the McLure Hotel. He went straight from the fund-raiser to a rally 15 minutes away in St. Clairsville, Ohio.

There, the Republican nominee for president spoke to a crowd of roughly 4,000. Theres something going on thats really, really bad, he said. And we better get smart, and we better get tough, or were not going to have much of a country left, O.K.?

It was a dark speech that harkened back to the most fearful tones of Joe McCarthy. Drumming up fears about the Islamic State, which he said was spreading like wildfire, Mr. Trump said that if he was elected, he would bring back the use of torture techniques like waterboarding in the interrogations of terrorism suspects. I dont think its tough enough, he said, of waterboarding, adding, We cant do waterboarding, but they can do chopping off heads, they can do drowning people in steel cages, they can do whatever they want. Mr. Trump also highlighted his other hits from the campaign trail, reminding the crowd about the threats from Nafta, Mexican immigrants and China. There was so much in the world to fear, and Donald Trump was the only one who could protect us.

One year after he walked in Joe McCarthys footsteps in Wheeling, Mr. Trump now practices Mr. McCarthys version of the politics of fear from the White House. The two figures, who bear striking similarities and who shared an adviser, Roy Cohn both mastered the art of fear politics.

Since he took office, Mr. Trump has expressed an apocalyptic vision of the United States and the wider world at nearly every turn, starting with an Inaugural Address in which his most memorable phrase was American carnage.

Over the past few months, he hasnt missed a chance to try to exploit fears over terrorism, using a series of attacks in Europe to argue in favor of his executive order calling for a travel ban on people from six Muslim-majority countries, which has been blocked by the courts. He has criticized other politicians, both in the United States and overseas, for political correctness on terrorism. He sticks to his scare tactics even when he is proven to be factually wrong and despite public rebukes from other world leaders.

He keeps doing it because it works for him, just like it worked for Joe McCarthy. Mr. Trump knows what people want to hear how terrifying the world can be and how he can protect them. Fearmongering resonates with his political base, particularly white voters without college degrees.

Fear of the other increases when the potential threats Mr. McCarthys Communists, or Mr. Trumps Muslims or Hispanics are poorly understood.

Underlying it all is a broad and unspoken fear of the looming loss of white dominance in American society. Increased diversity, notably the rapidly growing Hispanic population in the United States, is leading to a broader fear of all minority groups and foreigners, analysts believe.

White working-class voters who say they often feel like a stranger in their own land and who believe the U.S. needs protecting against foreign influence were 3.5 times more likely to favor Trump than those who did not share those concerns, concluded a study released in May by the Public Religion Research Institute and The Atlantic magazine.

Recent studies by psychologists have found that when they talk to white Americans about a future in which they are in the minority, that drives them to express more conservative views. You see a pretty reliable shift to the right when you emphasize the projected change in the demographics of the United States, says Jennifer Richeson, a professor of psychology at Yale University and one of the researchers involved with the studies. Once you activate the fear of a threat to group status, then anybody who is seen as not part of that group is seen as more of a threat.

Scott Crichlow, a professor of political science at the West Virginia University, sees that phenomenon in West Virginia, where whites without a college degree represent a larger percentage of the population than in any other state and where Mr. Trump saw one of his biggest margins of victory of any state in the 2016 election.

Clearly there is an audience for speeches that rally nationalist causes and against amorphous perceived threats, Mr. Crichlow said. What I think may be driving some of the appeal of the politics of fear is the states low education and demographics.

Wheeling Mayor Glenn Elliott believes there were several reasons for Mr. Trumps success here but thinks that fear of the other certainly played a big role.

When you have 40 years of economic stagnation, that leads to frustration with the status quo and to zero-sum thinking, the mayor said. And I also think part of his appeal was that he said, Im going to protect you from the Muslims, or Hispanics. There is a fear of that.

Trump supporters want to make America great again, to go back to what they believe were the halcyon days of the 1950s, which, ironically, was the decade of the fearmongering of Joe McCarthy.

I dont think West Virginia is a state full of racists, Mayor Elliott added. He does describe his state, though, as a place where cultural isolation and economic anxiety made it a perfect target for Mr. Trumps speech. There is also a fear of change that a skilled demagogue can tap into by focusing on the fear of the other, he said. Fear resonates.

James Risen is an investigative reporter for The Times and the author of Pay Any Price: Greed, Power and Endless War. Tom Risen is a reporter for Aerospace America Magazine.

Follow The New York Times Opinion section on Facebook and Twitter (@NYTopinion), and sign up for the Opinion Today newsletter.

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Lawsuit Accuses Donald Trump Of Illegally Destroying White House Records – HuffPost

Posted: at 6:47 am

Two watchdog groups have sued Donald Trumpover White House records, accusing the president of illegally destroying communications that must be preserved by federal law.

The suit filed Thursday against Trump and the Executive Office of the President by Citizens for Responsibility and Ethics in Washington (CREW) and the National Security Archive focuses on an auto-delete app reportedly being used for messages sent from the White House that erase messages after theyre read.

Such communications could involve correspondence among the president, aides, advisers, contractors, lobbyists and others. Theyre part of a historical record that belongs to the public and must be preserved, as mandated by the Presidential Records Act of 2014, notes the suit, which was filed in U.S. District Court for the District of Columbia. The law requires the preservation of communications in the White House and vice presidents office.

Yet evidence suggests that President Trump and others within the White House are either ignoring or outright flouting these responsibilities, the suit states.

The American people not only deserve to know how their government is making important decisions, its the law, CREW Executive Director Noah Bookbinder said in a statement. By deleting these records, the White House is destroying essential historical records.

CREW spokesman Jason Libowitz told HuffPost that the only reason for the Trump administration to delete messages is to keep them secret from the American people. He said its part of a larger, troubling pattern of information suppression in the Trump administration, which also includes deletion of the presidents tweets.

The suit cites a vanishing tweet on Trumps account about meeting with U.S. generals at Mar-a-Lago. Such tweets, involving official government business and policy statements by the president, are also subject to the Presidential Records Act, the suit argues.

Trump repeatedly blasted Democratic rival Hillary Clinton during the presidential campaign for her use of a private email server while she was secretary of state, but those emails were still recoverable.

The lawsuit against Trump cites a report in The Washington Post that White House staffers use an app called Confide, which sends encrypted messages that self-destruct once theyre read. The Wall Street Journal also reported similar use of the encryption cloaking app Signalfor White House messages.The use of the apps knowingly prevent the proper preservation of records, the suit charges.

Using encrypted messaging apps that prevent any kind of preservation raise serious concerns that presidential records are at risk, said Tom Blanton, director of the National Security Archive. Presidential records are not subject to the Freedom of Information Act while a president is in office. But they are accessible by law five years later provided they have been preserved.

The suit demands the records be preserved against efforts by the president and his staff that seek to evade transparency and government accountability.

The White House hasnt yet commented on the suit.

CREW also sued Trump in January, accusing him of violating the emoluments clause of the U.S. Constitutionby collecting foreign income through his various businesses. The clause forbids a president from receiving payments from foreign governments. In one example, theKuwait Embassy in February booked spaceand services for an event at Trumps hotel in Washington, D.C., that was estimated to cost as much as $60,000.

More than 190 Democratic lawmakers also sued Trump last week over the emoluments clause,saying he had accepted funds from foreign governments through his businesses without congressional consent in violation of the U.S. Constitution.

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