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Quantum state preparation in circuit QED via Landau-Zener tunneling

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arxiv cond-mat/0603188 v3 pith:4NFGXZUT submitted 2006-03-08 cond-mat.mes-hall cond-mat.supr-conquant-ph

Quantum state preparation in circuit QED via Landau-Zener tunneling

classification cond-mat.mes-hall cond-mat.supr-conquant-ph
keywords landau-zenermodequbitapplicationscircuitcircuit-qedcontrollablecoupling
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study a qubit undergoing Landau-Zener transitions enabled by the coupling to a circuit-QED mode. Summing an infinite-order perturbation series, we determine the exact nonadiabatic transition probability for the qubit, being independent of the frequency of the QED mode. Possible applications are single-photon generation and the controllable creation of qubit-oscillator entanglement.

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