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Updated: Aug 11, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
Published on: October 13, 2017
Strong coupling between single photons in semiconductor microcavities
William T M Irvine1, Kevin Hennessy, Dirk Bouwmeester
1Department of Physics, University of California, Santa Barbara, California 93106, USA. william@physics.ucsb.edu
Abstract:
We discuss the observability of strong coupling between single photons in semiconductor microcavities coupled by a chi2 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 chi2 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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