Photon emission statistics of a driven microwave cavity

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Journal Title
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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2023-07
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Language
en
Pages
11
1-11
Series
PHYSICAL REVIEW RESEARCH, Volume 5, issue 3
Abstract
Recent experimental advances have made it possible to detect individual quantum jumps in open quantum systems, such as the tunneling of single electrons in nanoscale conductors or the emission of photons from nonclassical light sources. Here, we investigate theoretically the statistics of photons emitted from a microwave cavity that is driven resonantly by an external field. We focus on the differences between a parametric and a coherent drive, which either squeezes or displaces the cavity field. We employ a Lindblad master equation dressed with counting fields to obtain the generating function of the photon emission statistics using a theoretical framework based on Gaussian states. We then compare the distribution of photon waiting times for the two drives as well as the g(2) functions of the outgoing light, and we identify important differences between these observables. In the long-time limit, we analyze the factorial cumulants of the photon emission statistics and the large-deviation statistics of the emission currents, which are markedly different for the two drives. Our theoretical framework can readily be extended to more complicated systems, for instance, with several coupled microwave cavities, and our predictions may be tested in future experiments.
Description
Funding Information: We thank D. Larsson Persson for fruitful discussions and acknowledge the support from the Research Council of Finland through the Finnish Centre of Excellence in Quantum Technology (Grants No. 352925) and No. 331737. This work was partially supported by the Wallenberg Centre for Quantum Technology (WACQT) funded by Knut and Alice Wallenberg Foundation. Publisher Copyright: © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
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Citation
Portugal , P , Brange , F , Kansanen , K S U , Samuelsson , P & Flindt , C 2023 , ' Photon emission statistics of a driven microwave cavity ' , PHYSICAL REVIEW RESEARCH , vol. 5 , no. 3 , 033091 , pp. 1-11 . https://doi.org/10.1103/PhysRevResearch.5.033091