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

Article

关键词: QUANTUM-DOT SPIN;    SINGLE-ELECTRON SPIN;    HOLE SPIN;    PHOTON;    ENTANGLEMENT;    DYNAMICS;    STATE;   

DOI  :  10.1103/PhysRevB.96.165308

来源: SCIE

【 摘 要 】

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.

【 授权许可】

Free