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Entanglement spectroscopy of a driven solid-state qubit and its detector

M. C. Goorden·M. Thorwart·M. Grifoni
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Abstract

We study the asymptotic dynamics of a driven quantum two level system coupled via a quantum detector to the environment. We find multi-photon resonances which are due to the entanglement of the qubit and the detector. Different regimes are studied by employing a perturbative Floquet-Born-Markov approach for the qubit+detector system, as well as non-perturbative real-time path integral schemes for the driven spin-boson system. We find analytical results for the resonances, including the red and the blue sidebands. They agree well with those of exact ab-initio calculations.

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M. C. Goorden, M. Thorwart, M. Grifoni. 2005-06-02. Entanglement spectroscopy of a driven solid-state qubit and its detector. https://doi.org/10.1103/physrevlett.93.267005

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