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Strong coupling between single photons in semiconductor microcavities

William T. M. Irvine·Kevin Hennessy·Dirk Bouwmeester
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Abstract

We discuss the observability of strong coupling between single photons in semiconductor microcavities coupled by a chi(2) nonlinearity. We present two schemes and analyze the feasibility of their practical implementation in three systems: photonic crystal defects, micropillars and microdisks, fabricated out of GaAs. We show that if a weak coherent state is used to enhance the chi(2) interaction, the strong coupling regime between two modes at different frequencies occupied by a single photon is within reach of current technology. The unstimulated strong coupling of a single photon and a photon pair is very challenging and will require an improvement in mirocavity quality factors of 2-4 orders of magnitude to be observable.

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William T. M. Irvine, Kevin Hennessy, Dirk Bouwmeester. 2006-02-09. Strong coupling between single photons in semiconductor microcavities. https://doi.org/10.1103/physrevlett.96.057405

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