On the efficiency of solid-state single photon sources

Details On the efficiency of solid-state single photon sources On the efficiency of solid-state single photon sources

2002-07-19

arxiv.org/abs/quant-ph/0207115v1

Physics

Quantum Physics

15 pages, 3 figures

Scientific paper

We discuss the efficiency of single photon sources based on a single quasi-monochromatic emitter (such as a semiconductor quantum dot) inserted in a pillar microcavity. We show that their efficiency, which is in principle excellent thanks to the Purcell effect, can be drastically limited by extrinsic cavity losses, such as those related to the scattering by the sidewalls roughness. We present novel design rules for micropillars in view of this application and show that for the well-mastered GaAs/AlAs system more than 70% of the emission can be concentrated into the collimated emission beam associated with the fundamental cavity mode.

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