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Latest Quantum information science Stories

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2011-01-13 08:18:34

Discovery moves quantum networks closer to reality Researchers at the University of Calgary, in Canada, collaborating with the University of Paderborn, in Germany, are working on a way to make quantum networks a reality and have published their findings in the journal Nature. A similar finding by a group at the University of Geneva, in Switzerland is reported in the same issue. "We have demonstrated, for the first time, that a crystal can store information encoded into entangled quantum...

2010-12-23 17:47:31

Scientists from the Kavli Institute of Nanoscience at Delft University of Technology and Eindhoven University of Technology have succeeded in controlling the building blocks of a future super-fast quantum computer. They are now able to manipulate these building blocks (qubits) with electrical rather than magnetic fields, as has been the common practice up till now. They have also been able to embed these qubits into semiconductor nanowires. The scientists' findings have been published in the...

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2010-12-07 10:20:00

A new laser-beam steering system that aims and focuses bursts of light onto single atoms for use in quantum computers has been demonstrated by collaborating researchers from Duke University and the University of Wisconsin-Madison. Described in the journal Applied Physics Letters, published by the American Institute of Physics, the new system is somewhat like the laser-light-show projectors used at rock concerts and planetariums. But it's much smaller, faster, atom-scale accurate and aimed at...

2010-11-30 16:53:15

Milestone reached on the path to integrated quantum technology Quantum information processing is arguably one of the most fascinating facets of modern quantum physics. A quantum computer operates with quantum bits (qubits) as units of information. Obeying the laws of quantum mechanics, such a computer would be capable of addressing several of the most difficult computational tasks unsolvable with present technology. In the past few decades, scientists learned to perform room-sized experiments...

2010-11-18 17:16:36

Heisenberg Uncertainty Principle sets limits on Einstein's 'spooky action at a distance,' new research finds Researchers have uncovered a fundamental link between the two defining properties of quantum physics. Stephanie Wehner of Singapore's Centre for Quantum Technologies and the National University of Singapore and Jonathan Oppenheim of the United Kingdom's University of Cambridge published their work today in the latest edition of the journal Science. The result is being heralded as a...

2010-11-17 22:07:39

Researchers at the California Institute of Technology (Caltech) have demonstrated quantum entanglement for a quantum state stored in four spatially distinct atomic memories. Their work, described in the November 18 issue of the journal Nature, also demonstrated a quantum interface between the atomic memories"”which represent something akin to a computer "hard drive" for entanglement"”and four beams of light, thereby enabling the four-fold entanglement to be distributed by photons...

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...


Word of the Day
humgruffin
  • A terrible or repulsive person.
Regarding the etymology of 'humgruffin,' the OED says (rather unhelpfully) that it's a 'made-up word.' We might guess that 'hum' comes from 'humbug' or possibly 'hum' meaning 'a disagreeable smell,' while 'gruffin' could be a combination of 'gruff' and 'griffin.'