Solvable model of phase-switching quantum feedback

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A quantized optical cavity mode controlled by dissipation, squeezed-light source and feedback loop is studied. The feedback is activated by detections of photons leaving the cavity and rapidly shifts the phase of the cavity field by π. The steady-state of the mode and first-order field correlation functions are obtained in closed analytical form and investigated. It appears that the feedback radically modifies the mode's spectrum. It gains asymmetry and its double-peaked structure becomes much more pronounced than in no-feedback case.

Original languageEnglish
Title of host publication5th International Conference on Quantum Technologies, ICQT 2019
EditorsAleksey Fedorov, Alexey Rubtsov
PublisherAmerican Institute of Physics Inc.
Number of pages5
ISBN (Electronic)9780735420007
Publication statusPublished - 23 Jun 2020
Event5th International Conference on Quantum Technologies, ICQT 2019 - Moscow, Russian Federation
Duration: 15 Jul 201919 Jul 2019

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Conference5th International Conference on Quantum Technologies, ICQT 2019
CountryRussian Federation


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