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OSERC Seminars

Photonic Architecture for Long-Lived, Room-Temperature Bose-Einstein Condensation

蒋建华,多伦多大学
Mon, 2014-09-01 13:30 - 14:30
物理楼616报告厅

Bose-Einstein Condensation is a macroscopic quantum matter that enables studies of many important physics, such as strong-correlation and many-body entanglement, and offers an important platform to study quantum computation. Current realization of Bose-Einstein Condensation using cold atoms involves high-cost, cryogenic set-ups. An alternative route is to use exciton-polaritons in microcavities, which, however, does not offer equilibrium Bose-Einstein Condensation due to short quasi-particle lifetime. Here I describe photonic crystal microcavities with very strong light-matter interaction to realize room-temperature, equilibrium, exciton-polariton Bose-Einstein condensation. This goal is achieved through a careful balance between strong light trapping in a photonic band gap and large exciton density enabled by a multiple quantum-well structure with a moderate dielectric constant. I will give solid, realistic examinations of such a proposal  which can lead to Bose-Einstein condensation for daily-life usage. This can be particularly important for future optical and quantum information processing.