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+25 +1
Smallest-ever optical switch revolves around one atom
It's actually smaller than the light beam it needs to work. We've seen some ridiculously tiny electronics in our day, but this might take the cake. Swiss researchers have built an optical networking switch so small that it's measured on the atomic scale -- in fact, it's smaller than the wavelength of light it needs to transmit data. The system can use just one silver atom to transmit an electrical current between silver and platinum pads. Apply enough voltage and the atom moves into place...
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Three ‘twisted’ photons in 3 dimensions
Researchers at the Institute of Quantum Optics and Quantum Information, the University of Vienna, and the Universitat Autonoma de Barcelona have achieved a new milestone in quantum physics: they were able to entangle three particles of light in a high-dimensional quantum property related to the 'twist' of their wavefront structure.
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+33 +1
Physicists find extreme violation of local realism in quantum hypergraph states
(Phys.org)—Many quantum technologies rely on quantum states that violate local realism, which means that they either violate locality (such as when entangled particles influence each other from far away) or realism (the assumption that quantum states have well-defined properties, independent of measurement), or possibly both. Violation of local realism is one of the many counterintuitive, yet experimentally supported, characteristics of the quantum world.
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+38 +1
German scientists successfully teleport classical information
Using a series of laser beams, a pair of German scientists successfully teleported classical information without the transfer or matter or energy. Researchers have previously demonstrated local teleportation within the world of quantum particles. But the latest experiment successfully translates the phenomenon for classical physics. "Elementary particles such as electrons and light particles exist per se in a spatially...
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+17 +1
Physicists demonstrate a quantum Fredkin gate
Researchers from Griffith University and the University of Queensland have overcome one of the key challenges to quantum computing by simplifying a complex quantum logic operation. They demonstrated this by experimentally realising a challenging circuit—the quantum Fredkin gate—for the first time.
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+13 +1
In One Universe, the Cat Dies
How the uncertain fate of a fictional tabby gave us the multiverse.
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+28 +1
Physicists just discovered a new state of matter called ‘quantum spin liquid’
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...
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+23 +1
Quantum computing: Game changer or security threat? - BBC News
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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+15 +1
Human mind excels at quantum-physics computer game
Revelation could have implications for how scientists approach quantum problems. By Elizabeth Gibney. (Apr. 13)
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+2 +1
Quantum Entanglement Made Simple
How quantum entanglement connects with the “many worlds” of quantum theory.
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+21 +1
Has the age of quantum computing arrived?
It’s a mind-bending concept with the potential to change the world, and Canadian tech company D-Wave claims to have cracked the code.
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+29 +1
New evidence could break the standard view of quantum mechanics
Quantum mechanics is difficult to understand at the best of times, but new evidence suggests that the current standard view of how particles behave on the quantum scale could be very, very wrong. In fact, the experiment hints that an alternative...
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+22 +1
Schrödinger’s cat alive and dead even after you saw it in half
A clever experiment preserves the quantum nature of a set of electromagnetic waves even when they're split apart, a stunt that could help make working quantum computers. By Joshua Sokol (May 26 ’16)
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+27 +1
Russia aims to develop 'teleportation' in 20 years
It’s a question that physicists, philosophers, and science fiction writers have pondered for decades: how to travel from one place to another without travelling through the space in between. Now a Kremlin-backed research program is seeking to make the teleportation technology behind Captain Kirk’s transporter a reality. A proposed multi-trillion pound strategic development program drawn up for Vladimir Putin would seek to develop teleportation by 2035. "It sounds fantastical today, but there have been successful...
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+20 +1
How Quantum Mechanics Could Be Even Weirder
And what it could mean for the future of computing. By Philip Ball. (June 22, 2016)
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+13 +1
The quantum origin of time
In our experience the past is the past and the future is the future, but sometimes the two can cross over. By Philip Ball.
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+16 +1
Researchers blur the line between classical and quantum physics by connecting chaos and entanglement
Using a small quantum system consisting of three superconducting qubits, researchers at UC Santa Barbara and Google have uncovered a link between aspects of classical and quantum physics thought to be unrelated: classical chaos and quantum entanglement. Their findings suggest that it would be possible to use controllable quantum systems to investigate certain fundamental aspects of nature.
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+13 +1
All you need for quantum computing at room temperature is some mothballs
Much of the current research in quantum computing involves work at close to absolute zero. A simple breakthough with an everyday material could see them work at more acceptable temperatures.
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Physicists show that gravity isn't affected by the quantum world
When it comes to physics, gravity rules pretty much everything we can see in the Universe - it keeps planets orbiting stars, stars orbiting black holes, and, well, all of us stuck on the planet. But while all the massive objects in the Universe...
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+21 +1
The Noise at the Bottom of the Universe
The origin of quantum noise is the modern incarnation of a millennia-old debate. By George Musser.
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