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Parametric control of a superconducting flux qubit

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arxiv cond-mat/0508448 v1 pith:NSVLADPC submitted 2005-08-19 cond-mat.mes-hall cond-mat.supr-con

Parametric control of a superconducting flux qubit

S. Saito , T. Meno , M. Ueda , H. Tanaka , K. Semba , H. Takayanagi This is my paper
classification cond-mat.mes-hall cond-mat.supr-con
keywords qubitparametriccontrolmicrowavefluxfrequencyobservedoscillations
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Parametric control of a superconducting flux qubit has been achieved by using two-frequency microwave pulses. We have observed Rabi oscillations stemming from parametric transitions between the qubit states when the sum of the two microwave frequencies or the difference between them matches the qubit Larmor frequency. We have also observed multi-photon Rabi oscillations corresponding to one- to four-photon resonances by applying single-frequency microwave pulses. The parametric control demonstrated in this work widens the frequency range of microwaves for controlling the qubit and offers a high quality testing ground for exploring nonlinear quantum phenomena.

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