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Author Fei, Wang ♦ Xiangming, Hu
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ ABSORPTION ♦ ATOMS ♦ DATA TRANSMISSION ♦ MATTER ♦ METASTABLE STATES ♦ QUANTUM ENTANGLEMENT ♦ RESONANCE ♦ TRAPPING ♦ TRAPS ♦ VISIBLE RADIATION ♦ COMMUNICATIONS ♦ ELECTROMAGNETIC RADIATION ♦ ENERGY LEVELS ♦ EXCITED STATES ♦ RADIATIONS ♦ SORPTION
Abstract We show that dark-state resonances can be a fundamental mechanism for the entanglement between light and matter. While two optical fields trap an ensemble of three-level {Lambda} atoms into the dark state, the coherence is created between the two metastable states, and the two fields undergo no absorption. The trapped atoms behave like a coherently coupled two-party reservoir and act on the two fields. As a result, Einstein-Podolsky-Rosen entanglement is obtainable between the atomic ensemble and one collective field under proper parameter conditions. Long-lived atomic coherence and no need of nonclassical input light are the advantages for quantum communications between light and matter based on the present mechanism.
ISSN 10502947
Educational Use Research
Learning Resource Type Article
Publisher Date 2010-09-15
Publisher Place United States
Journal Physical Review. A
Volume Number 82
Issue Number 3


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