Search results for qubits

General Physics Jul 31, 2008

Viterbi Algorithm goes quantum

The Viterbi Algorithm, the elegant 41-year-old logical tool for rapidly eliminating dead end possibilities in data transmission, has a new application to go alongside its ubiquitous daily use in cell phone communications, ...

General Physics Dec 14, 2007

Quantum Communication Over Flawed Networks may be Possible

If successfully implemented, quantum communication could be an extremely secure method of transmitting information – but there are major roadblocks to pass. Recently, physicists suggested a way, at least in theory, to overcome ...

General Physics Oct 1, 2007

New one-way quantum computer design offers possibility of efficient optical information processing

One of the most exciting and diverse fields of science today involves quantum information processing. There are many designs for quantum computers suggested, and a few that have been demonstrated. Among the demonstrated suggestions ...

Nanophysics Jun 5, 2006

Shuttling Electrons

“We are trying to understand quantum nano-electro-mechanical systems,” Jason Twamley explains to PhysOrg.com. “These systems display richer dynamics and interactions than one can obtain with quantum optical systems, ...

General Physics May 23, 2006

A Quantum CPU: the Pentium Q?

A new design scheme for a quantum processor core makes potential quantum computers more technically feasible, more efficient, and in many cases faster by keeping all of the quantum bits active all the time, rather than switching ...

Jul 7, 2005

Fundamental limitation to quantum computers

Quantum computers that store information in so-called quantum bits (or qubits) will be confronted with a fundamental limitation. This is the claim made by Dutch theoretical physicists from the Foundation for Fundamental ...

Jul 4, 2005

HP researchers propose new path to optical quantum computing

Researchers from HP Laboratories in Bristol, UK, have proposed an approach to distributed optical quantum computing with a technique that is highly efficient, flexible and scalable.

Superconductivity Jul 5, 2023

New tool helps improve quantum computing circuit component

Researchers use a new tool to help improve a key component in commercially produced quantum computing circuits. The team of scientists from the U.S. Department of Energy's (DOE) Ames National Laboratory in partnership with ...

Quantum Physics Apr 20, 2023

Heaviest Schrödinger cat achieved by putting a small crystal into a superposition of two oscillation states

Even if you are not a quantum physicist, you will most likely have heard of Schrödinger's famous cat. Erwin Schrödinger came up with the feline that can be alive and dead at the same time in a thought experiment in 1935. ...

Optics & Photonics Mar 13, 2023

A quantum playground for exploring light topology

A quantum device fabricated by Zhejiang University researchers could help to advance the design of quantum computers as it offers topological control over the units that store information within them. The team's results were ...

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