首页|Tunable single emitter-cavity coupling strength through waveguide-assisted energy quantum transfer
Tunable single emitter-cavity coupling strength through waveguide-assisted energy quantum transfer
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国家科技期刊平台
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The emitter-cavity strong coupling manifests crucial significance for exploiting quantum technology,especially in the scale of individual emitters.However,due to the small light-matter interaction cross-section,the single emitter-cavity strong coupling has been limited by its harsh requirement on the quality factor of the cavity and the local density of optical states.Herein,we present a strategy termed waveguide-assisted energy quantum transfer(WEQT)to improve the single emitter-cavity coupling strength by extending the interaction cross-section.Multiple ancillary emitters are optically linked by a waveguide,providing an indirect coupling channel to transfer the energy quantum between target emitter and cavity.An enhancement factor of coupling strength(g)/g＞10 can be easily achieved,which dramatically release the rigorous design of cavity.As an extension of concept,we further show that the ancillae can be used as controlling bits for a photon gate,opening up new degrees of freedom in quantum manipulation.
Yuan Liu、Hongwei Zhou、Linhan Lin、Hong-Bo Sun
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Department of Precision Instrument,State Key Laboratory of Precision Measurement Technology and Instruments,Tsinghua University,Beijing 100084,China
State Key Laboratory of Integrated Optoelectronics,College of Electronic Science and Engineering,Jilin University,Changchun 130012,China
National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaTsinghua University Initiative Scientific Research ProgramNational Natural Science Foundation of ChinaTsinghua-Foshan Innovation Special Fund
国家科技期刊平台
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