Cavity Quantum Electrodynamics with Anderson-localized Modes

Details Cavity Quantum Electrodynamics with Anderson-localized Modes Cavity Quantum Electrodynamics with Anderson-localized Modes

2010-03-12

arxiv.org/abs/1003.2525v1

Science 327, 1352 (2010)

Physics

Quantum Physics

Scientific paper

10.1126/science.1185080

A major challenge in quantum optics and quantum information technology is to enhance the interaction between single photons and single quantum emitters. Highly engineered optical cavities are generally implemented requiring nanoscale fabrication precision. We demonstrate a fundamentally different approach in which disorder is used as a resource rather than a nuisance. We generate strongly confined Anderson-localized cavity modes by deliberately adding disorder to photonic crystal waveguides. The emission rate of a semiconductor quantum dot embedded in the waveguide is enhanced by a factor of 15 on resonance with the Anderson-localized mode and 94 % of the emitted single-photons couple to the mode. Disordered photonic media thus provide an efficient platform for quantum electrodynamics offering an approach to inherently disorder-robust quantum information devices.

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