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Journal of Optics B Quantum and Semiclassical Optics

Cavity QED effects in semiconductor microcavities

Hichem Eleuch, Jean-Michel Courty, Gaétan Messin, Claude Fabre, E. Giacobino

Published Jan 1, 1999• 76 citations
Publisher

Abstract

A theoretical investigation of cavity QED effects in semiconductor microcavities containing quantum wells is presented. A model Hamiltonian is used to derive equations of motion for the quantum photon and exciton fields in the cavity. Quantum effects such as squeezing and antibunching are predicted in the light field going out of the cavity under irradiation by a coherent laser field, if exciton-phonon scattering is weak enough. Exciton-phonon scattering is shown to destroy the nonclassical effects and to yield excess noise in the output field.

DOI
10.1088/1464-4266/1/1/001

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Squeezed light is a particularly useful quantum resource, which finds broad applications in quantum information processing, quantum metrology and sensing, and biological measurements. Here we show how to produce squeezed light exploiting the strong exciton–phonon nonlinear interaction in a semiconductor microcavity. The semiconductor microcavity is embedded with a quantum well, which supports both linear and nonlinear interactions among excitons, phonons, and cavity photons. We show that the strong exciton–phonon deformation potential interaction can induce a quadrature-squeezed cavity output field, and further reveal an important role of the exciton–photon coupling in engineering the squeezing spectrum and improving the robustness of the squeezing against thermal noise. Our results indicate that substantial optical squeezing in a broad band, up to tens of gigahertz, can be achieved using currently available parameters.
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