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arXiv · 0903.2338

Dynamical bistability in the driven circuit QED

V. Peano·M. Thorwart
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Abstract

We show that the nonlinear response of a driven circuit quantum electrodynamics setup displays antiresonant multiphoton transitions, as recently observed in a transmon qubit device. By including photon leaking, we explain the lineshape by a perturbative and a semiclassical analysis. We derive a bistable semiclassical quasienergy surface whose lowest quasienergy eigenstate is squeezed, allowing for a squeezing-dependent local effective temperature. We study the escape dynamics out of the metastable state and find signatures of dynamical tunneling, similar as for the quantum Duffing oscillator.

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V. Peano, M. Thorwart. 2010-01-13. Dynamical bistability in the driven circuit QED. https://doi.org/10.1209/0295-5075%2F89%2F17008

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