Abstract

Solid-state cavity quantum-electrodynamics (QED) has great potential owing to advances such as coupled systems combining a nanocavity and a quantum dot (QD). These systems involve two photon-emission mechanisms: the Purcell effect in the weak coupling regime and vacuum Rabi-splitting in the strong coupling regime. In this paper, we describe a third emission mechanism based on the quantum anti-Zeno effect (AZE) induced by the pure-dephasing in a QD. This is significantly enhanced by the inherent characteristics of the nanocavity. This mechanism explains the origin of strong photon emission at a cavity mode largely detuned from a QD, previously considered a counterintuitive, prima facie non-energy-conserving, light-emission phenomenon. These findings could help in controlling the decay and emission characteristics of solid-state cavity QED, and developing solid-state quantum devices.

© 2008 Optical Society of America

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History
Original Manuscript: August 28, 2008
Manuscript Accepted: October 16, 2008
Revised Manuscript: October 16, 2008
Published: October 21, 2008

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Author Affiliations

Takashi Asano, Susumu Noda

Japan / Kyoto University

Makoto Yamaguchi

Kyoto University

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