Photon Antibunching from a Single Quantum-Dot-Microcavity System in the Strong Coupling Regime

David Press, Stephan Götzinger, Stephan Reitzenstein, Carolin Hofmann, Andreas Löffler, Martin Kamp, Alfred Forchel, and Yoshihisa Yamamoto

Phys. Rev. Lett. 98, 117402 – Published 16 March 2007

Abstract

We observe antibunching in the photons emitted from a strongly coupled single quantum dot and pillar microcavity in resonance. When the quantum dot was spectrally detuned from the cavity mode, the cavity emission remained antibunched, and also anticorrelated from the quantum dot emission. Resonant pumping of the selected quantum dot via an excited state enabled these observations by eliminating the background emitters that are usually coupled to the cavity. This device demonstrates an on-demand single-photon source operating in the strong coupling regime, with a Purcell factor of $61 \pm 7$ and quantum efficiency of 97%.

Received 25 September 2006

DOI:https://doi.org/10.1103/PhysRevLett.98.117402

Authors & Affiliations

David Press^1,*, Stephan Götzinger¹, Stephan Reitzenstein², Carolin Hofmann², Andreas Löffler², Martin Kamp², Alfred Forchel², and Yoshihisa Yamamoto^1,†

¹Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305-4085, USA
²Technische Physik, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany

^*Electronic address: dlpress@stanford.edu
^†Also at National Institute of Informatics, Hitotsubashi, Chiyoda-ku, Tokyo 101-8430, Japan.

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Issue

Vol. 98, Iss. 11 — 16 March 2007

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