News tagged with entangled state
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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Quantum physics is the focus of Nobel buzz
Three physicists whose research on entangled particles plays a key role in attempts to develop super-fast quantum computers could be in the running for the 2011 Nobel Prize in physics on Tuesday.
Oct 04, 2011 |
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The quantum world writ large: Using short optical pulses to study macroscopic quantum behavior
(PhysOrg.com) -- Einstein infamously dismissed quantum entanglement as spooky action at a distance and quantum uncertainty with his quip that God does not play dice with the universe. Aside from revealing his ...
Sep 27, 2011 |
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Quantum teleportation analysed by mathematical separation tool
Scientists from the University of Vienna's Faculty of Physics in Austria recently gave a theoretical description of teleportation phenomena in sub-atomic scale physical systems, in a publication in the European Physical Jo ...
Sep 27, 2011 |
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Quantum optical link sets new time records
Quantum communication could be an option for the absolutely secure transfer of data. The key component in quantum communication over long distances is the special phenomenon called entanglement between two ...
Aug 17, 2011 |
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Simplifying the process of detecting genuine multiparticle entanglement
(PhysOrg.com) -- The ability to entangle particles is considered essential for a number of experiments and applications. While we have seen evidence for quantum entanglement, it is still difficult to detect ...
May 20, 2011 |
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Physicists demonstrate a four-fold quantum memory
Researchers at the California Institute of Technology (Caltech) have demonstrated quantum entanglement for a quantum state stored in four spatially distinct atomic memories.
Nov 17, 2010 |
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Quantum memory for communication networks of the future
Researchers from the Niels Bohr Institute at the University of Copenhagen have succeeded in storing quantum information using two 'entangled' light beams. Quantum memory or information storage is a necessary ...
Nov 08, 2010 |
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Three tiny qubits, another big step toward quantum computing
(PhysOrg.com) -- The rules that govern the world of the very small, quantum mechanics, are known for being bizarre. One of the strangest tenets is something called quantum entanglement, in which two or more objects (such ...
Sep 29, 2010 |
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Physicists investigate electron fractionalization into not two, but three components
One of the many intriguing puzzles in physics is the strange behavior of the electron as it fractionalizes into two separate quasiparticles. These quasiparticles, called spinons and chargons (or holons), carry the electron’s ...
Aug 12, 2010 |
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Autonomous quantum error correction technique proposed for quantum memories
(PhysOrg.com) -- While words such as "powerful" and "efficient" are often used to describe the potential of quantum computing, these quantum systems can be very fragile at the same time. Errors in quantum ...
Aug 04, 2010 |
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Could some entangled states be useless for quantum cryptography?
(PhysOrg.com) -- One of the widely accepted properties of quantum entanglement is secrecy. Since scientists and researchers began working with quantum key distribution, entanglement has been considered an essential part of ...
Jul 05, 2010 |
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Physicists set guidelines for qubit candidates
(PhysOrg.com) -- To build a quantum computer, it's essential to be able to quickly and efficiently manipulate the quantum states of qubits. The qubits, which are the basic unit of quantum information, can be composed of many ...
May 04, 2010 |
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Straightening messy correlations with a quantum comb
Quantum computing promises ultra-fast communication, computation and more powerful ways to encrypt sensitive information. But trying to use quantum states as carriers of information is an extremely delicate ...
Nov 23, 2009 |
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Creating a six-qubit cluster state
(PhysOrg.com) -- Many scientists believe that quantum entanglement is required in order for effective quantum computing. Entanglement takes place when there is a connection that exists between two objects - even when they ...
Nov 02, 2009 |
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