Quantum state preparation in circuit QED via Landau-Zener tunneling

Details Quantum state preparation in circuit QED via Landau-Zener tunneling Quantum state preparation in circuit QED via Landau-Zener tunneling

2006-03-08

arxiv.org/abs/cond-mat/0603188v3

Europhys. Lett. vol. 76, 22 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 3 figures

Scientific paper

10.1209/epl/i2006-10232-4

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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