News tagged with quantum gate

Optical circuit enables new approach to quantum technologies

Professor Jeremy O'Brien, Director of the University of Bristol's Centre for Quantum Photonics, and his Japanese colleagues have demonstrated a quantum logic gate acting on four particles of light -- photons. The researchers ...

Physics / Quantum Physics

created Jun 24, 2011 | popularity 4 / 5 (4) | comments 0 | with audio podcast

All-optical quantum computation, step 1: A controlled-NOT photonic gate

(PhysOrg.com) -- The often counterintuitive quantum world of superposition, entanglement, and tunneling can greatly enhance applications as diverse as communication, information processing, and precision measurement. ...

Physics / Quantum Physics

created Jun 24, 2011 | popularity 4 / 5 (6) | comments 0 | with audio podcast feature

Physicists demonstrate teleportation-based optical quantum entangling gate

(PhysOrg.com) -- Taking a step toward the realization of futuristic quantum technologies, a team of physicists from China and Germany has demonstrated a key element – an entangling gate – of a quantum ...

Physics / Quantum Physics

created Dec 08, 2010 | popularity 4.6 / 5 (23) | comments 8 | with audio podcast feature

New evidence for quantum Darwinism found in quantum dots

(PhysOrg.com) -- Physicists have found new evidence that supports the theory of quantum Darwinism, the idea that the transition from the quantum to the classical world occurs due to a quantum form of natural ...

Physics / Quantum Physics

created May 10, 2010 | popularity 4.6 / 5 (48) | comments 31 | with audio podcast feature

Basic quantum computing circuit built

(PhysOrg.com) -- Exerting delicate control over a pair of atoms within a mere seven-millionths-of-a-second window of opportunity, physicists at the University of Wisconsin-Madison created an atomic circuit that may help quantum ...

Physics / Quantum Physics

created Feb 25, 2010 | popularity 4.8 / 5 (21) | comments 2 | with audio podcast

Digital Quantum Battery Could Boost Energy Density Tenfold

(PhysOrg.com) -- Physicists theorize that quantum phenomena could provide a major boost to batteries, with the potential to increase energy density up to 10 times that of lithium ion batteries. According to ...

Physics / Quantum Physics

created Dec 22, 2009 | popularity 4.9 / 5 (54) | comments 17 weblog

Researchers simplify fabrication of nano storage, chip-design tools

Advances by the Rice University lab of James Tour have brought graphite's potential as a mass data storage medium a step closer to reality and created the potential for reprogrammable gate arrays that could ...

Nanotechnology / Nanophysics

created Sep 09, 2009 | popularity 4.8 / 5 (8) | comments 1

Physicist takes a quantum leap

(PhysOrg.com) -- A University of Queensland physicist is seeking answers to a persistent problem throughout human history: how do I compute things? None, however, have had the same impact as what we today know as simply the ...

Physics / Quantum Physics

created Jul 06, 2009 | popularity 4.3 / 5 (7) | comments 2

Physicists Demonstrate Quantum Memory with Matter Qubits

(PhysOrg.com) -- For the first time, scientists have successfully operated a quantum gate between two remote particles of matter, marking an important step toward the development of a quantum computer. In ...

Physics / Quantum Physics

created Jul 03, 2009 | popularity 4.3 / 5 (21) | comments 2 feature

'Self-correcting' gates advance quantum computing

(PhysOrg.com) -- Two Dartmouth researchers have found a way to develop more robust “quantum gates,” which are the elementary building blocks of quantum circuits. Quantum circuits, someday, will be used to ...

Physics / General Physics

created Mar 12, 2009 | popularity 4.4 / 5 (15) | comments 4

Measuring quantum information without destroying it

(PhysOrg.com) -- One of the Holy Grails - so to speak - of science involves building quantum computers that can perform, with accuracy, the computations too advanced and too large for classical computers. While we remain ...

Physics / General Physics

created Jan 15, 2009 | popularity 4.6 / 5 (11) | comments 4 feature