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quantum computers News
Detector Counts Photons with 99% Efficiency
GAITHERSBURG, Md., April 28, 2010 — Scientists at the National Institute of Standards and Technology (NIST) have developed the world’s most efficient single photon detector, which is able to count individual particles of light traveling through fiber optic cables with roughly 99 percent efficiency. The team’s efforts could bring improvements to secure electronic communication, advanced quantum computation and the measurement of optical power. Using essentially the same technology that permitted them to achieve 88 p...
Images of Atomic Spin Captured
ATHENS, Ohio, April 28, 2010 — A custom-built microscope with an iron-coated tip to manipulate cobalt atoms on a plate of manganese has allowed physicists at Ohio University and the University of Hamburg in Germany to image, for the first time, a quantum mechanical property of...
Reaching Beyond the Quantum Limit
GARCHING, Germany, April 9, 2010 — For the first time scientists have succeeded in generating multi-particle entanglement on an atom-chip. This technique opens a way to significantly enhance the precision of chip-based atomic clocks or interferometers and could also form the basis...
Combing a Qubit
COLLEGE PARK, Md., April 8, 2010 — By adapting an optical frequency comb researchers have found a way to manipulate quantum bits (qubits). According to physicists at the University of Maryland, this discovery will be vital for the future of quantum computers. Conventional methods for...
Laser Security Halts Hackers
TEL AVIV, Israel, March 25, 2010 – Computer hackers are getting smarter, which not only puts our national security at risk, but also compromises our personal and financial information. Now, a new invention is promis...
Diamond Properties Speed Quantum Computing
BOCHUM, Germany, March, 22, 2010 – Another decisive step forward in the development of quantum computers has been successful. For the first time, researchers at Ruhr University and at the Universities of Stuttgart and Texas at Austin in the US have placed two nitrogen atoms at a...
Imperfect Chips Enhance Quantum Technology
LYNGBY, Denmark, March 16, 2010 – A lot of effort is put into perfecting optical chips, which, among other applications, are used within quantum technology. However, a group at DUT Fotonik is saying that imperfectio...
Photons Led Astray
ERLANGEN, Germany, Feb. 17, 2010 – An international team, headed by researchers at the Max Planck Institute for the Science of Light, is using polarized light (light waves that oscillate in a particular plane) to de...
Toy Houses Built From Light
CALGARY, Alberta, Canada, Feb. 16, 2010 – A team of physicists from the University of Calgary has discovered how to use quantum entanglement to stack light particles. By manipulating the quantum entanglement, this team...
Quantum Entanglement
PASADENA, Calif., Dec. 23, 2009 – A new paradigm that should allow scientists to observe quantum behavior in small mechanical systems has been realized by researchers at California Institute of Technology (Caltech). Their ideas offer a new means of addressing one of the most...
“Photonic machine gun” fires up supercomputer research
LONDON – The entanglement of photons is key to developing quantum computers and cryptography devices. However, understanding exactly what entanglement means is tricky, as is generating entangled photons at defined points in time. Researchers at Imperial...
1st Atomic-scale QD Map Made
ANN ARBOR, Mich., Sept. 29, 2009 – The first atomic-scale maps of quantum dots was created by a team of physicists at the University of Michigan, who say it is a major step toward producing “designer dots” that can be tailored for specific applications.
Polarized Light Rules Qubits
GAITHERSBURG, Md., July 7, 2009 – One of the great challenges in creating a working quantum computer is maintaining control over the carriers of information, the ‘switches’ in a quantum processor, while isolating them from the environment. Physicists at NIST have now devised a...
Lasers Lengthen Qbit Memory
ANN ARBOR, Mich., June 24, 2009 – Physicists have found a way to drastically prolong the shelf life of quantum bits, the 0s and 1s of quantum computers. A quantum dot is a semiconductor nanostructure that is one candidate for creating quantum bits. The scientists, including the...
Crystals Curb Qubit Errors
GAITHERSBURG, Md., April 23, 2009 – A technique for efficiently suppressing errors in quantum computers has been realized by researchers at the National Institute of Standards and Technology (NIST). According to the researchers, this advance could eventually make it much easier to...
Trapped Ions Keep Their Cool
GAITHERSBURG, Md., April 9, 2009 – A new ion trap enables them to go through an intersection while keeping their cool, NIST physicists said. This new method keeps the ions 10 million times cooler than in prior similar trips and is a step toward large-scale quantum computing.
Probe IDs Atomic Fingerprint
CAMBRIDGE, Mass., Sept. 4, 2008 -- A new way of measuring a quantum system's energy level could help overcome a key barrier to the advent of superfast quantum computers, seen as potentially powerful tools for applications such as code breaking. Researchers at the Massachusetts...
Ultracold Atomic Gases
BOULDER, Colo., Aug. 6, 2008 – A newly discovered method of photoemission spectroscopy may soon help create a more efficient transmission of electricity across powers grids, and could eventually serve as a building block for some atomic clock and quantum computer designs....
Hybrid Atom Identified
WEST LAFAYETTE, Ind., June 27, 2008 -- Experiments with nanoscale transistors by an international team have led to the identification of a hybrid atom that is half natural, half man-made and could be used to develop quantum computers. "Up to now large-scale quantum computing has been...
Quantum Images Easily Made
GAITHERSBURG, Md., June 13, 2008 -- A simple and flexible method for creating twin light beams has been used to produce quantum images, visual patterns with features linked by the laws of quantum physics. The method could help with the detection of faint objects, improve the...
Flip-Spin Flop Yields Tool
EUGENE, Ore., June 2, 2008 -- An attempt to flip the spin of electrons using ultrafast laser bursts may have failed, but in the process researchers found a way to manipulate and control electron spin -- knowledge that may prove useful in a variety of new materials and...
Winners of Germany's 2008 Heinz Maier-Leibnitz Prize Announced
Mar 28, 2008 — Researchers working in materials science, quantum optics and analytical chemistry are among six recipients of the 2008 Heinz Maier-Leibnitz Prize, Germany's top research prize for young scientists. The winners were selected by the executive...
A MOT With a Twist
ROCHESTER, N.Y., Dec. 13, 2007 -- An atom chiller has been combined with a molecule trap, creating a device that can generate and trap huge numbers of elusive-yet-valuable ultracold polar molecules. Scientists believe ultracold polar molecules will allow them to create exotic...
Chemist Cracks Crystal Case
TALLAHASSEE, Fla., Oct 24, 2007 -- A chemist has cracked a case of mysterious crystal characteristics, concluding a 70-year conundrum. His complex calculations could lead to the creation of more powerful computer memories and lasers and, quite possibly, quantum computers. Naresh...
Quantum Dots as Building Blocks for High-Security Computers
Oct 1, 2007 — The allure of a quantum computer is powerful. The device, theoretically, could process certain types of information at such an accelerated pace that the classical computers now in use might seem in comparison as antiquated as the manual...
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