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arXiv · 1012.5599

Quantum behaviour of a flux qubit coupled to a resonator

A. N. Omelyanchouk·S. N. Shevchenko·Ya. S. Greenberg·O. Astafiev·E. Ilichev
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Abstract

We present a detailed theoretical analysis for a system of a superconducting flux qubit coupled to a transmission line resonator. The master equation, accounting incoherent processes for a weakly populated resonator, is analytically solved. An electromagnetic wave transmission coefficient through the system, which provides a tool for probing dressed states of the qubit, is derived. We also consider a general case for the resonator with more than one photon population and compare the results with an experiment on the qubit-resonator system in the intermediate coupling regime, when the coupling energy is comparable with the qubit relaxation rate.

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A. N. Omelyanchouk, S. N. Shevchenko, Ya. S. Greenberg, O. Astafiev, E. Ilichev. 2010-12-27. Quantum behaviour of a flux qubit coupled to a resonator. https://doi.org/10.1063/1.3515520

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