G - Physics – 01 – R
Patent
G - Physics
01
R
G01R 33/00 (2006.01) G06N 99/00 (2010.01) G01R 33/035 (2006.01) H01L 27/18 (2006.01) H01L 39/22 (2006.01)
Patent
CA 2470845
A structure comprising a tank circuit inductively coupled to a flux qubit or a phase qubit. In some embodiments, a low temperature preamplifier is in electrical communication with the tank circuit. The tank circuit comprises an effective capacitance and an effective inductance that are in parallel or in series. In some embodiments, the effective inductance comprises a multiple winding coil of wire. A method that includes the steps of (i) providing a tank circuit and a phase qubit that are inductively coupled, (ii) reading out a state of the phase qubit, (iii) applying a flux to the phase qubit that approaches a net zero flux, (iv) increasing a level of flux applied to the phase qubit, and (v) observing a response of the tank circuit in a readout device.
L'invention se rapporte à une structure comprenant un circuit oscillant final couplé par induction à un bit quantique de flux ou à un bit quantique de phase. Dans certains modes de réalisation de l'invention, un préamplificateur à faible température est en communication électrique avec le circuit oscillant final. Le circuit oscillant comprend une capacitance effective et une inductance effective qui sont en parallèle ou en série. Dans certains modes de réalisation, l'inductance effective comporte une bobine à enroulements multiples d'un câble. L'invention concerne aussi un procédé consistant (i) à fournir un circuit oscillant et un bit quantique de phase qui sont couplés par induction, (ii) à extraire un état du bit quantique de phase, (iii) à appliquer un flux au bit quantique de phase qui avoisine un flux zéro net, (iv) à augmenter un niveau de flux appliqué au bit quantique de phase, et (v) à observer une réponse du circuit oscillant final dans un dispositif de lecture.
Grajcar Miroslav
Il'ichev Evgeni
Steininger Miles F.h.
Zagoskin Alexandre M.
D-Wave Systems Inc.
Fasken Martineau Dumoulin Llp
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