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Latest Quantum information science Stories

NIST Physicists Benchmark Quantum Simulator With Hundreds Of Qubits
2012-04-25 11:32:05

Physicists at the National Institute of Standards and Technology (NIST) have built a quantum simulator that can engineer interactions among hundreds of quantum bits (qubits)–10 times more than previous devices. As described in the April 26 issue of Nature*, the simulator has passed a series of important benchmarking tests and scientists are poised to study problems in material science that are impossible to model on conventional computers. Many important problems in...

Quantum Physics Mimics Spooky Action Into The Past
2012-04-23 09:37:30

Physicists of the group of Prof. Anton Zeilinger at the Institute for Quantum Optics and Quantum Information (IQOQI), the University of Vienna, and the Vienna Center for Quantum Science and Technology (VCQ) have, for the first time, demonstrated in an experiment that the decision whether two particles were in an entangled or in a separable quantum state can be made even after these particles have been measured and may no longer exist. Their results will be published this week in the journal...

2012-04-18 21:40:51

Long predicted but never observed, coherent quantum phase slip can be harnessed to develop a novel class of quantum devices A new type of quantum bit called a "phase-slip qubit", devised by researchers at the RIKEN Advanced Science Institute and their collaborators, has enabled the world's first-ever experimental demonstration of coherent quantum phase slip (CQPS). The groundbreaking result sheds light on an elusive phenomenon whose existence, a natural outcome of the hundred-year-old...

Quantum Network Created Based On Interfaces Between Single Atoms And Photons
2012-04-12 09:37:30

Brett Smith for Redorbit.com Quantum physicists have made a leap forward in subatomic particle communication by connecting two separate labs 21-meters apart using two atoms and a photon, according to a report published in the April 12 issue of Nature. A group from the Max Planck Institute of Quantum Optics (MPQ) in Garching, Germany said they have demonstrated the ability to construct a basic two-node network that could be expanded because of its high efficiency and fidelity....

2012-04-09 13:28:24

A team led by an Ames Laboratory scientist develops new technique for solid-state quantum information processing Scientists have overcome a major hurdle facing quantum computing: how to protect quantum information from degradation by the environment while simultaneously performing computation in a solid-state quantum system. A group led by U.S. Department of Energy´s Ames Laboratory physicist Viatsheslav Dobrovitski and including scientists at Delft University of Technology; the...

Image 1 - Researchers Create Quantum Computer In Diamond
2012-04-06 04:31:03

A girl's best friend has stepped into the digital age as scientists from the University of Southern California have built a quantum computer inside a diamond. The scientists reported in the journal Nature on Thursday that their diamond quantum computer system features two quantum bits, or qubits, made of subatomic particles. Qubits are able to encode a one and a zero at the same time, compared to traditional computer bits, which encode distinctly either a one or a zero. Being able to...

2012-04-02 09:25:53

A research team led by University of Toronto Professor Hoi-Kwong Lo has found a new quantum encryption method to foil even the most sophisticated hackers. The discovery is outlined in the latest issue of Physical Review Letters. Quantum cryptography is, in principle, a foolproof way to prevent hacking. It ensures that any attempt by an eavesdropper to read encoded communication data will lead to disturbances that can be detected by the legitimate users. Therefore, quantum cryptography...

2012-03-23 09:43:47

One of the strange features of quantum information is that, unlike almost every other type of information, it cannot be perfectly copied. For example, it is impossible to take a single photon and make a number of photons that are in the exact same quantum state. This may seem minor, but it's not. If perfect copying was possible, it would, among other things, be possible to send signals faster than the speed of light. This is forbidden by Einstein's theory of relativity. For years,...

2012-03-21 15:32:08

Nature Nanotechnology: On the way to the quantum computer The alphabet of data processing could include more elements than the "0" and "1" in future. An international research team has achieved a new kind of bit with single electrons, called quantum bits, or qubits. With them, considerably more than two states can be defined. So far, quantum bits have only existed in relatively large vacuum chambers. The team has now generated them in semiconductors. They have put an effect in practice,...

2012-03-05 22:49:56

Researchers at the UNIGE have succeeded in entangling 2 macroscopic crystals, a step towards the development of quantum memory For almost fifteen years Professor Nicolas Gisin and his physicist col- laborators have been entangling photons. If this exercise seems to them perhaps henceforth trivial, it continues to elude us ordinary humans. The laws that govern the quantum world are so strange that they completely escape us human beings confronted with the laws of the macroscopic world. This...


Word of the Day
omadhaun
  • A fool; a simpleton: a term of abuse common in Ireland and to a less extent in the Gaelic-speaking parts of Scotland.
This word is partly Irish in origin.