Quantcast
Last updated on April 20, 2014 at 17:20 EDT

Latest Quantum computer Stories

39dc3716b187cfeabf21df08a703d18c1
2011-04-26 09:10:00

By Roland Michel Tremblay (rm@themarginal.com) Interstellar space-travel and near-instant communication; discovering a network of intelligent extraterrestrial signals; harnessing the mysterious instantaneous quantum-entanglement effect. These are all either science fiction or things we will probably never live to see or understand, correct? Not at all. By the end of this article you will see how clarifying a simple but extremely fundamental misunderstanding in our science legacy makes all of...

809e811e952944bfce434b4a7fb5c05e1
2011-04-19 14:12:01

A team from Pitt, UW-Madison, and HP Labs reports in Nature Nanotechnology a 1.5-nanometer single-electron transistor that could lead to long-lasting, ultradense computer memories, quantum computers, and advanced electronics A University of Pittsburgh-led team has created a single-electron transistor that provides a building block for new, more powerful computer memories, advanced electronic materials, and the basic components of quantum computers. The researchers report in Nature...

2011-03-17 12:02:59

A team of physicists in the United Kingdom has taken a giant step toward realizing efficient single-photon sources, which are expected to enable much-coveted completely secure optical communications, also known as "quantum cryptography." The team presents its findings in Applied Physics Letters, a journal published by the American Institute of Physics. Fluorescent "defect centers" in diamond act like atomic-scale light sources and are trapped in a transparent material that's large enough to...

2011-03-10 18:27:56

New switching device could help build a dream: the ultrafast quantum Internet Northwestern University researchers have developed a new switching device that takes quantum communication to a new level. The device is a practical step toward creating a network that takes advantage of the mysterious and powerful world of quantum mechanics. The researchers can route quantum bits, or entangled particles of light, at very high speeds along a shared network of fiber-optic cable without losing the...

5f1976035aba05ecfadd9eb8f7876d521
2011-03-10 13:43:37

Device may help process information and measure motion at quantum scale Physicists at the National Institute of Standards and Technology (NIST) have demonstrated an electromechanical circuit in which microwaves communicate with a vibrating mechanical component 1,000 times more vigorously than ever achieved before in similar experiments. The microscopic apparatus is a new tool for processing information and potentially could control the motion of a relatively large object at the smallest...

8c2c49fe54f3972533ca2c18eb391f141
2011-03-02 09:25:19

A research group led by scientists from the University of Bristol has demonstrated the quantum operation of new components that will enable compact circuits for future photonic quantum computers. Quantum computers, holding the great promise of tremendous computational power for particular tasks, have been the goal of worldwide efforts by scientists for several years. Tremendous advances have been made but there is still a long way to go. Building a quantum computer will require a large number...

d88b0706dc0fc8540aefdb2e66614b471
2011-02-24 09:53:22

Austrian researchers realize a toolbox for open-system quantum simulation Experimental physicists have put a lot of effort in isolating sensitive measurements from the disruptive influences of the environment. In an international first, Austrian quantum physicists have realized a toolbox of elementary building blocks for an open-system quantum simulator, where a controlled coupling to an environment is used in a beneficial way. This offers novel prospects for studying the behavior of highly...

e33edea2537af9df7cae578faee773121
2011-02-24 09:50:55

Atomic antennae transmit quantum information across a microchip The Austrian research group led by physicist Rainer Blatt suggests a fundamentally novel architecture for quantum computation. They have experimentally demonstrated quantum antennae, which enable the exchange of quantum information between two separate memory cells located on a computer chip. This offers new opportunities to build practical quantum computers. The researchers have published their work in the scientific journal...

5e028b122cd7802d7e189ef18a6c8ad91
2011-02-24 09:48:27

New technique has potential to simplify future information processing Physicists at the National Institute of Standards and Technology (NIST) have for the first time coaxed two atoms in separate locations to take turns jiggling back and forth while swapping the smallest measurable units of energy. By directly linking the motions of two physically separated atoms, the technique has the potential to simplify information processing in future quantum computers and simulations. Described in a...

c380c86f74c318bcbe0529cf4f36a1be1
2011-02-15 13:19:05

An important milestone toward the realization of a large-scale quantum computer, and further demonstration of a new level of the quantum control of light, were accomplished by a team of scientists at UC Santa Barbara and in China and Japan. The study, published in the Feb. 7 issue of the journal Physical Review Letters, involved scientists from Zhejiang University, China, and NEC Corporation, Japan. The experimental effort was pursued in the research groups of UCSB physics professors Andrew...