Cavity-QED assisted attraction between a cavity mode and an exciton mode in a planar photonic-crystal cavity | Zendy

Takehiko Tawara | Zendy; H. Kamada | Zendy; Takasumi Tanabe | Zendy; Tetsuomi Sogawa | Zendy; Hiroshi Okamoto | Zendy; Peijun Yao | Zendy; P. K. Pathak | Zendy; Stephen Hughes | Zendy

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Cavity-QED assisted attraction between a cavity mode and an exciton mode in a planar photonic-crystal cavity

Author(s) -

Takehiko Tawara,

H. Kamada,

Takasumi Tanabe,

Tetsuomi Sogawa,

Hiroshi Okamoto,

Peijun Yao,

P. K. Pathak,

Stephen Hughes

Publication year - 2010

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.18.002719

Subject(s) - dephasing , exciton , photoluminescence , optics , optical microcavity , photonic crystal , planar , photon , physics , biexciton , spontaneous emission , coupling (piping) , resonance (particle physics) , materials science , spectral line , cavity quantum electrodynamics , mode volume , condensed matter physics , atomic physics , quantum , laser , quantum mechanics , optical fiber , fiber optic sensor , computer graphics (images) , computer science , open quantum system , metallurgy , graded index fiber

The photoluminescence spectra from a quantum-dot exciton weakly-coupled to a planar photonic-crystal cavity is experimentally investigated by temperature tuning. Significant resonance shifts of the cavity mode are observed as the cavity mode spectrally approaches that of the exciton mode, showing the appearance of cavity-to-exciton attraction or mode pulling. Cavity-mode spectral shifts are also found theoretically using a master equation model that includes incoherent pump processes for the coupled exciton and cavity, pure dephasing, and allows for photon emission via radiation modes and the leaky cavity mode. Both experiments and theory show clear cavity mode spectral shifts in the photoluminescence spectra, when certain coupling parameters are met. However, discrepancies between the experimental data and theory, including more pronounced spectral shifts in the measurements, indicate that other unknown mode-pulling effects may also be occurring.

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