News tagged with quantum circuit
First-ever calculation performed on optical quantum computer chip
Sep 03, 2009 |
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(PhysOrg.com) -- A primitive quantum computer that uses single particles of light (photons) whizzing through a silicon chip has performed its first mathematical calculation. This is the first time a calculation ...
'Self-correcting' gates advance quantum computing
Mar 12, 2009 |
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(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 ...
Fock states could hold clues to quantum memory components
Dec 23, 2008 |
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(PhysOrg.com) -- “Fock states will play a role in the future of quantum computing,” Andrew Cleland tells PhysOrg.com. “We have completed the first experimental measurement of the time decay of Fock states in a superconducting quantu ...
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Researchers Design Triple Quantum Dot for Quantum Information Applications
Nov 30, 2009 |
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(PhysOrg.com) -- While quantum dots have existed since the 1980s, only in the past decade have physicists successfully created lateral few-electron single quantum dots. These quantum dots enable physicists ...
Physicists make discovery in quantum mechanics
Sep 23, 2009 |
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(Santa Barbara, Calif.) -- Physicists at UC Santa Barbara have made an important advance in quantum mechanics using a superconducting electrical circuit. The finding is reported in this week's issue of the journal Nature.
Pushing quantum mechanics to higher levels
Aug 11, 2009 |
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Scientists at UC Santa Barbara have devised a new type of superconducting circuit that behaves quantum mechanically -- but has up to five levels of energy instead of the usual two. The findings are published ...
Physicists Demonstrate Quantum Memory with Matter Qubits
Jul 03, 2009 |
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(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 ...
Quantum physicists control supercurrent
Aug 10, 2006 |
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Netherlands scientists say they've shown that in a quantum-mechanical circuit, the current can be reversed by using a single electron.
Quantum technologies move a step closer with the demonstration of an 'entanglement' filter
Jan 22, 2009 |
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(PhysOrg.com) -- A team of physicists and engineers has demonstrated an optical device that filters two particles of light (or photons) based on the correlations between their polarisation that are only allowed in the seemingly ...
Switchyard for single electrons
Feb 25, 2008 |
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German scientists achieved to transfer very small charge "packets", comprising a well-defined number of few electrons, between metallic electrons precisely by using a single-electron pump. A single-electron transistor, being ...
Quantum computing: Entanglement may not be necessary
Dec 05, 2008 |
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(PhysOrg.com) -- It is a truth universally acknowledged that quantum computing must have entanglement.
Researchers make breakthrough in the quantum control of light
May 29, 2009 |
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Researchers at UC Santa Barbara have recently demonstrated a breakthrough in the quantum control of photons, the energy quanta of light. This is a significant result in quantum computation, and could eventually ...
Researchers make milestone discovery in quantum mechanics
Aug 05, 2008 |
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Researchers at UC Santa Barbara have recently reached what they are calling a milestone in experimental quantum mechanics.
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