Dynamics of a superconducting qubit coupled to the quantized cavity field: a unitary transformation approach

2013/01/31 by Dagoberto S. Freitas, A. Vidiella-Barranco, J. A. Roversi · 2 citations
Physics and Astronomy · #quant-ph

paper · pdf · doi:10.1140/epjd/e2014-40679-4

arxiv created 2014/04/06 · arxiv updated 2015/06/12

Abstract

We present a novel approach for studying the dynamics of a superconducting qubit in a cavity. We succeed in linearizing the Hamiltonian through the application of an appropriate unitary transformation followed by a rotating wave approximation (RWA). For certain values of the parameters involved, we show that it is possible to obtain a a Jaynes-Cummings type Hamiltonian. As an example, we show the existence of super-revivals for the qubit inversion.

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• Preparation of a superposition of squeezed coherent states of a cavity field via coupling to a superconducting charge qubit
• Preparation of Schrödinger cat states of a cavity field via coupling to a superconducting charge qubit

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