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Latest Quantum information science Stories

2010-11-09 20:48:21

Quantum computers may be much easier to build than previously thought, suggests a new study in Physical Review Letters Quantum computers should be much easier to build than previously thought, because they can still work with a large number of faulty or even missing components, according to a study published today in Physical Review Letters. This surprising discovery brings scientists one step closer to designing and building real-life quantum computing systems "“ devices that could...

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2010-11-08 10:39:19

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 element of future quantum communication networks. The new findings are published in Nature Physics. Quantum networks will be able to protect the security of information better than the current conventional communication networks. The cornerstone of quantum communication is a phenomenon...

2010-10-20 00:49:48

Critical component of quantum communication device may enable cryptography When the military needs to send the key to encrypted data across the world, it can't necessarily rely on today's communication lines, where the message could be covertly intercepted. But physicists at the Georgia Institute of Technology in Atlanta are developing a new, more secure way to send such information across far distances, using existing cables and the laws of quantum mechanics. Alex Kuzmich and colleagues have...

2010-10-05 13:48:40

An important step "“"“ one that is essential to the ultimate construction of a quantum computer "“"“ was taken for the first time by physicists at UC Santa Barbara. The discovery is published in the current issue of the journal Nature. The research involves the entanglement of three quantum bits of information, or qubits. Before now, entanglement research in the solid state has only been developed with two qubits. The UCSB finding comes from a collaboration of the...

2010-09-30 14:38:50

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 as particles of light, called photons) become inextricably linked, so that measuring certain properties of one object reveals information about the other(s), even if they are separated by thousands of miles. Einstein found the consequences of entanglement so unpalatable he famously dubbed it...

2010-09-27 17:24:26

Researchers develop key building block needed to make a quantum computer using silicon A team led by engineers and physicists at the University of New South Wales (UNSW) in Sydney, Australia, have developed one of the key building blocks needed to make a quantum computer using silicon: a "single electron reader". Their work was published today in Nature. Quantum computers promise exponential increases in processing speed over today's computers through their use of the "spin", or magnetic...

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2010-09-27 12:08:56

Entanglement is a fascinating property connecting quantum systems. Albert Einstein called it the "spooky action at a distance". This bizarre coupling can link particles, even if they are located on opposite sides of the galaxy. The strength of their connections is behind the promising quantum computers, the dream machines capable of quick and efficient computations. The team lead by Rainer Blatt at the Institute of Experimental Physics of the University of Innsbruck has been working very...

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2010-09-27 07:26:45

Using optically dense, ultra-cold clouds of rubidium atoms, researchers have made advances in three key elements needed for quantum information systems "“ including a technique for converting photons carrying quantum data to wavelengths that can be transmitted long distances on optical fiber telecom networks. The developments move quantum information networks "“ which securely encode information by entangling photons and atoms "“ closer to a possible prototype system....

2010-09-17 14:03:55

Team successfully decoupled a single quantum spin from its surroundings Finding ways to control matter at the level of single atoms and electrons fascinates many scientists and engineers because the ability to manipulate single charges and single magnetic moments (spins) may help researchers penetrate deep into the mysteries of quantum mechanics and modern solid-state physics. It may also allow development of new, highly sensitive magnetometers with nanometer resolution, single-spin...

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2010-09-17 12:58:46

An international research group led by scientists from the University of Bristol has developed a new approach to quantum computing that could soon be used to perform complex calculations that cannot be done by today's computers. Scientists from Bristol's Centre for Quantum Photonics have developed a silicon chip that could be used to perform complex calculations and simulations using quantum particles in the near future. The researchers believe that their device represents a new route to a...


Word of the Day
barratry
  • The offense of persistently instigating lawsuits, typically groundless ones.
  • An unlawful breach of duty on the part of a ship's master or crew resulting in injury to the ship's owner.
  • Sale or purchase of positions in church or state.
This word ultimately comes from the Old French word 'barater,' to cheat.
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