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quantum computing News
Computer Chips Made Rewritable with Light
NEW YORK, June 27, 2012 — A new technique for making rewritable computer chips uses laser light to control the spin of an atom’s nucleus to encode information, bringing ultrafast quantum computing a step closer to reality.
Efficient and Tunable Entanglement Method Developed
INNSBRUCK, Austria, May 25 — To construct a viable quantum network, individual computers will need a way to reliably transmit information to each other. This will require an understanding of how light and matter interact at a quantum level, an understanding that is now much...
Primate Study Deems QDs Nontoxic — at Least for Short Term
BUFFALO, N.Y., May 22, 2012 — Cadmium-selenide quantum dots are nontoxic to primates over a one-year period, a new study found. The dots could hold great promise as tools for treating and detecting diseases such as cancer through nanomedicine.
One Step Closer to a Quantum Internet
GARCHING, Germany, April 11, 2012 — Communications networks are vital for our day-to-day lives, and now the first prototype of a quantum one has been developed based on interfaces between single atoms and photons. For a quantum network to be useful, the exchange of quantum...
Quantum optical effects could change lasing, data processing
HAMBURG, Germany – Two new discoveries – extending a technique that makes atomic nuclei transparent to light at certain wavelengths up to the x-ray range, and using light to manipulate light via an optically controlled switch – could have important...
EIT Extended to X-ray Regime
HAMBURG, Germany, Feb. 10, 2012 — A technique that makes atomic nuclei transparent to light at certain wavelengths was extended to the x-ray regime; it could have important implications in the fields of lasing and quantum information processing.
Quantum Physics Enables Secure Cloud Computing
VIENNA, Feb. 2, 2012 — By combining quantum computing with quantum cryptography, a perfectly secure cloud computing environment was achieved, addressing one of the many challenges facing the current trend of storing information remotely.
Giant Atoms Trapped with 90% Efficiency
ANN ARBOR, Mich., Dec. 29, 2011 — With an “egg carton” of laser light, physicists can trap giant Rydberg atoms with up to 90 percent efficiency. The achievement could advance computing and terahertz imaging and detection devices, among other applications.
A New Quantum State of Matter Unearthed
PITTSBURGH, Nov. 29, 2011 — Research on topological states to advance quantum computing — a method that harnesses the power of atoms and molecules for computational tasks — has revealed a surprising new topological semi-metal that could change the face of...
“Optics table on a chip” superpositions photons
GAITHERSBURG, Md. – A tiny, tunable superconducting circuit can place a single microwave photon in two frequencies simultaneously, potentially leading to the long-sought “optics table on a chip.” Researchers at the National Institute of Standards and...
Revealed: The private lives of electrons
PRINCETON, N.J. – Using laser light, scientists have looked into the complex relationship that develops between a single electron and its environment, known as a Kondo state. The break-through could aid the development of quantum computers. Scientists at Princeton...
Spiraling Light Boosts Telecom Channels
NEW YORK, Aug. 29, 2011 — Physicists have mapped spiraling light that could help to harness untapped data channels in optical fibers, which could increase bandwidth and ease the burden on fiber optic telecommunications networks. “Being able to follow polarization and...
Plasmonic Nanowires Advance Optical Computing
TÜBINGEN, Germany, Aug. 11, 2011 — A technique that combines surface plasmons, useful for data transfer, with cold atoms that store data may enable the construction of optical and quantum computing devices. A Bose-Einstein condensate is applied to plasmonic nanowires. (Images:...
Eavesdropper demonstrates loophole in secure communications
SINGAPORE – Quantum key distribution (QKD) is designed for secure computer-based interactions, keeping communication between two remote parties confidential by enabling them to construct a shared secret key during the course of their conversation. It may sound...
Diamonds Aren’t Forever
SYDNEY, Australia, July 18, 2011 — Diamond may be the hardest naturally occurring material on Earth, but admire a sparkler in unfiltered sunlight and it will start shedding atoms. The discovery shows that diamond can be etched gently instead of through the more damaging process of...
‘Optics Table on a Chip’ Superpositions Photons
GAITHERSBURG, Md., July 13, 2011 — A tiny, tunable superconducting circuit can place a single microwave photon in two frequencies simultaneously, potentially leading to the long-sought “optics table on a chip.” Researchers at the National Institute of Standards and...
Optical Circuit Enables New Quantum Tech Approach
BRISTOL, England, June 29, 2011 — A fundamental building block for quantum computing that could soon be employed in a range of quantum technologies has been demonstrated. This quantum logic gate, acting on four photons, could lead to secure communications, precision measurement and...
Beam Me Up, Schrödinger: Bits of Quantum Light Teleported
CANBERRA, Australia, April 20, 2011 — Using a teleporter and a paradoxical cat, researchers have achieved the first-ever transfer of a particular complex set of quantum information from one point to another, opening the way for quantum communication networks. The cat in the...
Photons for quantum computing
GAITHERSBURG, Md. – A reliable source of photons for quantum computers could be a step closer to realization, thanks to scientists at the National Institute of Standards and Technology (NIST) who have found that calculations impossible or impractical to achieve with...
Production of Gold Nanoantennas Made Highly Precise
Washington, Jan. 3 , 2010 — Moving a step closer toward quantum computing, a research team in the Netherlands recently fabricated a photodetector based on a single nanowire, in which the active element is a single quantum dot with a volume of a mere 7000 cubic nanometers. ...
Single photons retain character as wavelength changes
GAITHERSBURG, Md. – The wavelength of a single photon can be changed significantly without destroying its fundamental quantum character, researchers have reported. This finding has application in the developing field of quantum information science, which includes...
Tiny Laser Show Lights Up Quantum Computing
WASHINGTON, Dec. 9, 2010 — A new laser-beam steering system that aims and focuses bursts of light onto single atoms for use in quantum computers has been demonstrated by collaborating researchers from Duke University and the University of Wisconsin-Madison. Described in the...
Atomic Behavior Recorded in Real Time
SAN JOSE, Calif., Sept. 24, 2010 — IBM announced a breakthrough to its 20-year-old scanning tunneling microscope technology on Friday that gives scientists the ability to record, study and visualize the extremely fast spin of electrons inside individual atoms, in real time. Similar...
Lasers Cool, Control Molecules
NEW HAVEN, Conn., Sept. 22, 2010 — While laser cooling techniques that produce ultracold atoms have been around for decades, it has not extended to molecules because of their complex internal structure. Now physicists at Yale University are cooling molecules down to a temperature...
Sensor Measures Eensy Weensy Forces Fast
GAITHERSBURG, Md., Sept. 22, 2010 — Physicists at the National Institute of Standards and Technology (NIST) have used a small crystal of ions to detect forces at the scale of yoctonewtons. Measurements of slight forces — one yoctonewton is equivalent to the weight of a single...
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June 2024
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