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arXiv · 1707.09342

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

D. S. Smirnov·B. Reznychenko·A. Auffèves·L. Lanco
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Abstract

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.

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D. S. Smirnov, B. Reznychenko, A. Auffèves, L. Lanco. 2017-07-28. Measurement back-action and spin noise spectroscopy in a charged cavity-QED device in the strong coupling regime. https://doi.org/10.1103/physrevb.96.165308

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