Tag "photon" archive

New ‘switch’ could power quantum computing

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Using a laser to place individual rubidium atoms near the surface of a lattice of light, scientists have developed a new method for connecting particles — one that could help in the development of powerful quantum computing systems. The new technique allows researchers to couple a lone atom of rubidium, a metal, with a single photon, or light particle. Continue reading “New ‘switch’ could power quantum computing” »

Petawatt ‘Death Star’ laser prepares to investigate quantum mechanics, chemistry, and more


As high-power lasers have become increasingly important in scientific research, engineers have been working to build more powerful beam emitters. Now Lawrence Livermore National Laboratory (LLNL) in California is taking it to the extreme with a new laser project. If the High-Repetition-Rate Advanced Petawatt Laser System (HAPLS) lives up to its promise, it will be able to produce a laser with over 1 petawatt of power in extremely fast pulses. Continue reading “Petawatt ‘Death Star’ laser prepares to investigate quantum mechanics, chemistry, and more” »

Physicists Create and Control a Large Quantum System Built on Photons

Quantum Mechanics by onilukos

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A new study from Yale University shows that scientists can create and control a large quantum mechanical system built on photons, suggesting that they might be able to expand the role of photons in quantum information systems. Light might be able to play a bigger, more versatile role in the future of quantum computing, according to new research by Yale University scientists. Continue reading “Physicists Create and Control a Large Quantum System Built on Photons” »

Entanglement Enhanced Detection of Single Photons

Detection of Single Photons

In a newly published study, physicists from the University of Innsbruck detail a technique to detect the scattering of a single photon on a broad optical transition with high sensitivity, using an entangled state to amplify the tiny momentum kick an ion receives upon scattering a photon.

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All-optical transistor


Optical computing — using light rather than electricity to perform calculations — could pay dividends for both conventional computers and quantum computers, largely hypothetical devices that could perform some types of computations exponentially faster than classical computers. An optical switch that can be turned on by a single photon could point toward new designs for both classical and quantum computers.

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