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Archive for the ‘quantum physics’ category: Page 790

Apr 6, 2016

Advance may make quantum computing more practical

Posted by in categories: computing, engineering, quantum physics, transportation

Very nice; we’re getting closer.


But superposition is fragile, and finding ways to preserve it is one of the chief obstacles to developing large, general-purpose quantum computers. In today’s Nature, MIT researchers describe a new approach to preserving superposition in a class of quantum devices built from synthetic diamonds. The work could ultimately prove an important step toward reliable quantum computers.

In most engineering fields, the best way to maintain the stability of a physical system is feedback control. You make a measurement — the current trajectory of an airplane, or the temperature of an engine — and on that basis produce a control signal that nudges the system back toward its desired state.

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Apr 5, 2016

How artificial intelligence will impact the role of security pros

Posted by in categories: quantum physics, robotics/AI, security

Granted AI performs well at identifying, predicting how to respond through analyzing patterns and information, etc. However, AI is not completely hacker proof at this point. AI still requires close monitoring by humans. The bottom line is until the existing net infrastructure and digital platforms are Quantum based; it will be hard to make AI hacker proof and fully autonomous due to the risks with the existing digital technology.


In the new battle between man and machine, how does artificial intelligence impact the security professional?

Posted by Ben Rossi.

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Apr 5, 2016

IBM Watson is Working to Bring AI to the Blockchain

Posted by in categories: bitcoin, computing, finance, internet, quantum physics, robotics/AI, security

I consider this as a nice interim step in maturing the digital platform environment for financial services. However, once Quantum Computing, Quantum Internet, etc. is available to the masses such as in China, etc. this solution will fail in protecting financial data and other PPI related information as recent research is showing us.

https://lnkd.in/bjcCJ-U


IBM is currently attempting to merge artificial intelligence and the blockchain into a single, powerful prototype.

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Apr 5, 2016

New laser technique promises super-fast and super-secure quantum cryptography

Posted by in categories: encryption, quantum physics

Nice


A new method of implementing an ‘unbreakable’ quantum cryptographic system is able to transmit information at rates more than ten times faster than previous attempts.

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Apr 5, 2016

Changing the color of single photons in a diamond quantum memory

Posted by in categories: computing, electronics, quantum physics

Researchers from the Institute for Quantum Computing at the University of Waterloo and the National Research Council of Canada (NRC) have, for the first time, converted the colour and bandwidth of ultrafast single photons using a room-temperature quantum memory in diamond.

Shifting the colour of a photon, or changing its frequency, is necessary to optimally link components in a quantum network. For example, in optical quantum communication, the best transmission through an optical fibre is near infrared, but many of the sensors that measure them work much better for visible light, which is a higher frequency. Being able to shift the colour of the photon between the fibre and the sensor enables higher performance operation, including bigger data rates.

Changing the Color of Single Photons

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Apr 5, 2016

Laser technique promises super-fast and super-secure quantum cryptography

Posted by in categories: encryption, quantum physics

A new method of implementing an ‘unbreakable’ quantum cryptographic system is able to transmit information at rates more than ten times faster than previous attempts.

Researchers have developed a new method to overcome one of the main issues in implementing a quantum cryptography system, raising the prospect of a useable ‘unbreakable’ method for sending sensitive information hidden inside particles of light.

By ‘seeding’ one inside another, the researchers, from the University of Cambridge and Toshiba Research Europe, have demonstrated that it is possible to distribute encryption keys at rates between two and six orders of magnitude higher than earlier attempts at a real-world quantum cryptography system. The results are reported in the journal Nature Photonics.

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Apr 5, 2016

Physicists just discovered a new state of matter called ‘quantum spin liquid’

Posted by in categories: computing, particle physics, quantum physics

Researchers with the University of Cambridge say they have the first real evidence of a new state of matter, some 40 years after it was first theorized.

Known as “quantum spin liquid,” the matter states causes normally unbreakable electrons to fracture into pieces, called “Majorana fermions.” These fermions are an important discovery: Physicists believe the material is crucial to further develop quantum computing. Computers employing Majorana fermions would be able to carry out calculations beyond the scope of modern computers quickly, they say.

Quantum spin liquid explains some of the odd behaviors inside magnetic materials. In these materials, the electrons should behave like small bar magnets, all aligning towards magnetic north when a material is cooled. But not all magnetic materials do this — if the material contains quantum spin liquid, the electrons don’t all line up and become entangled.

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Apr 5, 2016

Scientists have just discovered a new state of matter

Posted by in categories: particle physics, quantum physics

Researchers have just discovered evidence of a mysterious new state of matter in a real material. The state is known as ‘quantum spin liquid’ and it causes electrons — one of the fundamental, indivisible building blocks of matter — to break down into smaller quasiparticles.

Scientists had first predicted the existence of this state of matter in certain magnetic materials 40 years ago, but despite multiple hints of its existence, they’ve never been able to detect evidence of it in nature. So it’s pretty exciting that they’ve now caught a glimpse of quantum spin liquid, and the bizarre fermions that accompany it, in a two-dimensional, graphene-like material.

“This is a new quantum state of matter, which has been predicted but hasn’t been seen before,” said one of the researchers, Johannes Knolle, from the University of Cambridge in the UK.

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Apr 4, 2016

Quantum computing: Game changer or security threat?

Posted by in categories: computing, finance, quantum physics, security

Definitely a game changer; security threat depends on who gets the technology adopted on a broad scale first prior to other countries (China? USA? Australia? Russia? UK? CAN?, etc.)


Quantum computing offers financial institutions the prospect of faster transactions and lower trading costs, but is it also a threat to security?

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Apr 4, 2016

Quantum physics has just been found hiding in one of the most important mathematical models of all time

Posted by in categories: information science, mathematics, particle physics, quantum physics, space

Game theory is a branch of mathematics that looks at how groups solve complex problems. The Schrödinger equation is the foundational equation of quantum mechanics — the area of physics focused on the smallest particles in the Universe. There’s no reason to expect one to have anything to do with the other.

But according to a team of French physicists, it’s possible to translate a huge number of problems in game theory into the language of quantum mechanics. In a new paper, they show that electrons and fish follow the exact same mathematics.

Schrödinger is famous in popular culture for his weird cat, but he’s famous to physicists for being the first to write down an equation that fully describes the weird things that happen when you try to do experiments on the fundamental constituents of matter. He realised that you can’t describe electrons or atoms or any of the other smallest pieces of the Universe as billiard balls that will be exactly where you expect them to be exactly when you expect them to be there.

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