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Latest Quantum computer Stories

2012-01-17 12:41:02

Breakthrough in coordinating electrons advances goal of quantum computing An international team of researchers including scientists at Princeton University have achieved a 100-fold increase in the ability to maintain control the spins of electrons in a solid material, a key step in the development of ultrafast quantum computers. Until recently, the best attempts at such control lasted for only a fraction of a second. But researchers Stephen Lyon and Alexei Tyryshkin have found a way to...

2011-12-19 15:10:02

Pitt physicists able to obtain higher-precision measurements with “single-electrons in-diamond” approach Quantum computing–considered the powerhouse of computational tasks–may have applications in areas outside of pure electronics, according to a University of Pittsburgh researcher and his collaborators. Working at the interface of quantum measurement and nanotechnology, Gurudev Dutt, assistant professor in Pitt´s Department of Physics and Astronomy in the...

2011-12-12 13:24:20

The fundamental resource that drives a quantum computer is entanglement–the connection between two distant particles which Einstein famously called 'spooky action at a distance'. The Bristol researchers have, for the first time, shown that this remarkable phenomenon can be generated, manipulated and measured entirely on a tiny silica chip. They have also used the same chip to measure mixture–an often unwanted effect from the environment, but a phenomenon which can now be...

2011-12-09 12:12:37

Physicists at the National Institute of Standards and Technology (NIST) have found a way to manipulate atoms' internal states with lasers that dramatically influences their interactions in specific ways. Such light-tweaked atoms can be used as proxies to study important phenomena that would be difficult or impossible to study in other contexts. Their most recent work, appearing in Science,* demonstrates a new class of interactions thought to be important to the physics of superconductors that...

2011-11-02 21:52:30

A discovery by physicists at UC Santa Barbara may earn silicon carbide —— a semiconductor commonly used by the electronics industry —— a role at the center of a new generation of information technologies designed to exploit quantum physics for tasks such as ultrafast computing and nanoscale sensing. The research team discovered that silicon carbide contains crystal imperfections that can be controlled at a quantum mechanical level. The finding is published this week...

2011-10-28 04:00:00

MARINA DEL REY, Calif., Oct. 28, 2011 /PRNewswire/ -- USC; Lockheed Martin, Inc.; and D-Wave Systems, Inc. will officially unveil the first commercial and operational quantum computer academic center at USC Viterbi School of Engineering's WHAT: Information Sciences Institute. WHO: Dr. Ray Johnson, CTO, Lockheed Martin Dr. Daniel Lidar, Director, USC-Lockheed Martin Quantum Computing Center Dr. Geordie...

Image 1 - Physicists Move 1 Step Closer To Quantum Computer
2011-10-04 11:39:38

'Electron superhighway' could pave way for creation of elusive quantum-particle pairs Rice University physicists have created a tiny "electron superhighway" that could one day be useful for building a quantum computer, a new type of computer that will use quantum particles in place of the digital transistors found in today's microchips. In a recent paper in Physical Review Letters, Rice physicists Rui-Rui Du and Ivan Knez describe a new method for making a tiny device called a "quantum...

Image 1 - Digital Quantum Simulator Realized
2011-09-04 05:49:45

  Almost two years ago Rainer Blatt's and Christan Roos' research groups from the University of Innsbruck recreated the properties of a particle moving close to speed of light in a quantum system. They encoded the state of the particle into a highly cooled calcium atom and used lasers to manipulate it according to equations proposed by the famous quantum physicist Paul Dirac. Thereby, the scientists were able to simulate so called Zitterbewegung (quivering motion) of relativistic...

2011-09-02 11:19:02

A new paradigm in quantum information processing has been demonstrated by physicists at UC Santa Barbara. Their results are published in this week's issue of Science Express online. UCSB physicists have demonstrated a quantum integrated circuit that implements the quantum von Neumann architecture. In this architecture, a long-lived quantum random access memory can be programmed using a quantum central processing unit, all constructed on a single chip, providing the key components for a...

2011-08-31 14:42:52

Thanks to advances in experimental design, physicists at the National Institute of Standards and Technology (NIST) have achieved a record-low probability of error in quantum information processing with a single quantum bit (qubit)–the first published error rate small enough to meet theoretical requirements for building viable quantum computers. A quantum computer could potentially solve certain problems that are intractable using today's technology, even supercomputers. The NIST...