Measurement back action and spin noise spectroscopy in a charged cavity QED device in the strong coupling regime

We study theoretically the spin-induced and photon-induced fluctuations of optical signals from a singly-charged quantum dot-microcavity structure. We identify the respective contributions of the photon-polariton interactions, in the strong light-matter coupling regime, and of the quantum back actio...

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Bibliographic Details
Published in:Physical review. B 2017-10, Vol.96 (16), Article 165308
Main Authors: Smirnov, D. S., Reznychenko, B., Auffèves, A., Lanco, L.
Format: Article
Language:English
Subjects:
Coupling
Larmor precession
Optical communication
Physics
Polaritons
Quantum dots
Quantum optics
Quantum Physics
Quantum theory
Spectrum analysis
Spin dynamics
Superconductors
Variations
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Summary:We study theoretically the spin-induced and photon-induced fluctuations of optical signals from a singly-charged quantum dot-microcavity structure. We identify the respective contributions of the photon-polariton interactions, in the strong light-matter coupling regime, and of the quantum back action induced by photon detection on the spin system. Strong spin projection by a single photon is shown to be achievable, allowing the initialization and measurement of a fully-polarized Larmor precession. The spectrum of second-order correlations is deduced, displaying information on both spin and quantum dot-cavity dynamics. The presented theory thus bridges the gap between the fields of spin noise spectroscopy and quantum optics.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.96.165308