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arXiv · 1503.01597

Lasing in circuit quantum electrodynamics with strong noise

M. Marthaler·Y. Utsumi·D. S. Golubev
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Abstract

We study a model which can describe a superconducting single electron transistor (SSET) or a double quantum dot coupled to transmission-line oscillator. In both cases the degree of freedom is given by a charged particle, which couples strongly to the electromagnetic environment or phonons. We consider the case where a lasing condition is established and study the dependence of the average photon number in the resonator on the spectral function of the electromagnetic environment. We focus on three important cases: a strongly coupled environment with a small cut-off frequency, a structured environment peaked at a specific frequency and 1/f-noise. We find that the electromagnetic environment can have a substantial impact on the photon creation. Resonance peaks are in general broadened and additional resonances can appear.

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M. Marthaler, Y. Utsumi, D. S. Golubev. 2015-03-05. Lasing in circuit quantum electrodynamics with strong noise. https://doi.org/10.1103/physrevb.91.184515

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