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Josephson junction |
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Josephson junctionDevice used in ‘superchips’ (large and complex integrated circuits) to speed the passage of signals by a phenomenon called ‘electron tunnelling’. Although these superchips respond a thousand times faster than the silicon chip, they have the disadvantage that the components of the Josephson junctions operate only at temperatures close to absolute zero. They are named after English theoretical physicist Brian Josephson. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Josephson junctions are good candidates for a quantum computer with recent experiments demonstrating reasonably long coherence times, state preparation, manipulation and measurement, and coupling of qubits for even-tual gate operations. Benz and his coworkers, for example, take advantage of phase locking to ensure that large arrays of superconducting Josephson junctions display voltage oscillations of a well-defined frequency, despite small differences among the individual components. These chips utilize Josephson junctions approximately 1. |
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Josephson junctions
