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Latest Quantum computer Stories

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...

2010-09-21 22:03:03

Ever since audiences heard Goldfinger utter the famous line, "No, Mr. Bond; I expect you to die," as a laser beam inched its way toward James Bond and threatened to cut him in half, lasers have been thought of as white-hot beams of intensely focused energy capable of burning through anything in their path. Now a team of Yale physicists has used lasers for a completely different purpose, employing them to cool molecules down to temperatures near what's known as absolute zero, about -460...

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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...

2010-09-15 17:29:25

The PhD thesis by Carlos Echeverría Arrondo, Doctor in Physics from the Public University of Navarre and entitled "On doped semiconductor quantum dots and magnetic nanowires", studied the behaviour and properties of nanometric-scale semiconductor crystals. The interest aroused by nanoscience and nanotechnology spurred Dr Echeverría to study the behaviour of semiconductor crystals when their size is reduced to less than one hundred nanometres (a nanometre is...

2010-08-09 14:26:30

Dr. David Awschalom, professor of physics at the University of California, Santa Barbara has been selected as the recipient of the 2010 Materials Research Society Turnbull award for research funded in large measure by the Air Force Office of Scientific Research. The David Turnbull Award, one of the three highest honors bestowed upon scientists by MRS, will be awarded to Dr. Awschalom at the MRS Fall Meeting in Boston, Ma. for his achievements and leadership in establishing the field of...

2010-08-05 14:28:52

Physicists demonstrate means for quantum bits to communicate over long distances A team of Harvard physicists led by Mikhail D. Lukin has achieved the first-ever quantum entanglement of photons and solid-state materials. The work marks a key advance toward practical quantum networks, as the first experimental demonstration of a means by which solid-state quantum bits, or "qubits," can communicate with one another over long distances. Quantum networking applications such as long-distance...

2010-07-27 15:39:09

Uncertainty in the presence of a quantum memory A quantum particle is hard to grasp, because one cannot determine all its properties precisely at the same time. Measurements of certain parameter pairs such as position and momentum remain inaccurate to a degree given by Heisenberg's Uncertainty Principle. This is important for the security of quantum cryptography, where information is transmitted in the form of quantum states such as the polarization of particles of light. A group of...

2010-07-27 13:39:36

Location-based security is ensured by using quantum mechanics A research group led by computer scientists at the UCLA Henry Samueli School of Engineering and Applied Science has proved that cryptography "” the practice and study of hiding information "” that is based solely on physical location is possible by using quantum mechanics. Such a method, the researchers say, allows one to encrypt and decrypt data at a secure location without pre-sharing any cryptographic keys that can...

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2010-07-08 13:45:17

Physicists at the National Institute of Standards and Technology (NIST) have demonstrated an ion trap with a built-in optical fiber that collects light emitted by single ions (electrically charged atoms), allowing quantum information stored in the ions to be measured. The advance could simplify quantum computer design and serve as a step toward swapping information between matter and light in future quantum networks. Described in a forthcoming issue of Physical Review Letters,* the new device...


Word of the Day
mallemaroking
  • Nautical, the visiting and carousing of sailors in the Greenland ships.
This word is apparently from a confusion of two similar Dutch words: 'mallemerok,' a foolish woman, and 'mallemok,' a name for some persons among the crew of a whaling vessel.