News tagged with entanglement
Related topics: quantum mechanics , quantum computing , physical review letters , photons , quantum information
Chinese group breaks distance record for teleporting qubits
(Phys.org) -- A team of Chinese physicists has broken the distance record for teleporting qubits, extending it from 16 to 97 kilometers. They did so, as they explain in their paper uploaded to the preprint ...
May 14, 2012 |
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Paper stirs up controversy over the nature of the quantum wave function
(Phys.org) -- Back in November, a paper posted to a preprint server arXiv by three British physicists prompted some heated debate regarding the nature of the quantum wave function, a probability function that p ...
May 09, 2012 |
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Trade-off coding for quantum communication provides more benefits than previously thought
(Phys.org) -- In optical communication systems, the overall performance depends on the strategy used to transmit photons from one location to another. In previous attempts to optimize this performance, scientists ...
Apr 16, 2012 |
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Researchers demonstrate entanglement of two quantum bits inside of a semiconductor
(Phys.org) -- Research into quantum bits (qubits) for use in a quantum computer has become tied to entanglement, the still mysterious phenomenon whereby subatomic particles exist in an entangled state such that any change ...
Apr 13, 2012 |
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143 is largest number yet to be factored by a quantum algorithm
(Phys.org) -- While factoring an integer is a simple problem when the integer is small, the complexity of factorization greatly increases as the integer increases. When the integer grows to more than 100,000 ...
Apr 11, 2012 |
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Two crystals linked by quantum physics
Physicists take a perverse pleasure in playing with the strangeness of the quantum world. That's how they have managed to entangle minuscule objects such as photons. After specific manipulations, they persuade two photons ...
Mar 05, 2012 |
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Professor proposes challenge to prove whether people can see entangled images
(PhysOrg.com) -- Geraldo Barbosa, professor of electrical engineering and computer science at Northwestern University has posed an interesting challenge. He wonders if the human eye and brain together are ...
Feb 29, 2012 |
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Keeping it together: Protecting entanglement from decoherence and sudden death
(PhysOrg.com) -- Decoherence can be metaphorically seen as a quantum fall from grace: When quantum bits, or qubits, are in superposition – such as a single qubit simultaneously having both 1 and 0 values ...
Feb 27, 2012 |
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$8.5 million research initiative will study best approaches for quantum memories
The U.S. Air Force Office of Scientific Research (AFOSR) has awarded $8.5 million to a consortium of seven U.S. universities that will work together to determine the best approach for generating quantum memories ...
Feb 15, 2012 |
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Quantum physicists shed new light on relation between entanglement and nonlocality
(PhysOrg.com) -- New research from the University of Bristol may disprove a long-standing conjecture made by one of the founders of quantum information science: that quantum states featuring ‘positive partial transpose’, ...
Jan 30, 2012 |
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Proposed experiment offers new way to generate macroscopic entanglement
(PhysOrg.com) -- In the development of quantum information processing, one of the key requirements is achieving quantum entanglement. But recently, physicists have been investigating other forms of quantum correlations besides ...
Jan 05, 2012 |
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Quantum cats are hard to see
Are there parallel universes? And how will we know? This is one of many fascinations people hold about quantum physics. Researchers from the universities of Calgary and Waterloo in Canada and the University ...
Dec 16, 2011 |
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Vibration rocks for entangled diamonds
(PhysOrg.com) -- Diamonds are celebrated for their enduring beauty and hardness but they can also be a physicist’s best friend.
Dec 16, 2011 |
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Multi-purpose photonic chip paves the way to programmable quantum processors
The fundamental resource that drives a quantum computer is entanglement—the connection between two distant particles which Einstein famously called 'spooky action at a distance'. The Bristol researchers ...
Dec 11, 2011 |
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In the quantum world, diamonds can communicate with each other
Researchers working at the Clarendon Laboratory at the University of Oxford in England have managed to get one small diamond to communicate with another small diamond utilizing "quantum entanglement," one ...
Dec 02, 2011 |
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