Superconducting quantum-bit device based on josephson junctions

Details Superconducting quantum-bit device based on josephson junctions Superconducting quantum-bit device based on josephson junctions

H - Electricity

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H01L 39/22 (2006.01) G06N 99/00 (2010.01) H01L 27/18 (2006.01)

Patent

CA 2403522

A superconducting quantum-bit device based on Josephson junction has a charge as a first principal degree of freedom assigned to writing and a phase as a second principal degree of freedom assigned to reading. The device comprises a Cooper-pair box comprising first and second Josephson junctions defining a charge island of the Cooper-pair box closing up onto a superconducting loop. A read circuit comprises a read Josephson junction J L inserted into the superconducting loop and having a Josephson energy E j at least 50 times greater than the Josephson energy of each of the first and second Josephson junctions.

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