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Quantum control of electromagnetically induced transparency dispersion via atomic tunneling in a double-well Bose-Einstein condensate
Stevens Institute of Technology.
Stevens Institute of Technology.
Department of Physics and Engineering Physics, Stevens Institute of Technology, Castle Point on Hudson, Hoboken, New Jersey 07030, USA.ORCID-id: 0000-0002-8049-2425
2008 (engelsk)Inngår i: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 78, nr 1, artikkel-id 013830Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Electromagnetically induced transparency (EIT) is an important tool for controlling light propagation and nonlinear wave mixing in atomic gases with potential applications ranging from quantum computing to table top tests of general relativity. Here we consider EIT in an atomic Bose-Einstein condensate (BEC) trapped in a double-well potential. A weak probe laser propagates through one of the wells and interacts with atoms in a three-level Lambda configuration. The well through which the probe propagates is dressed by a strong control laser with Rabi frequency Omega(mu), as in standard EIT systems. Tunneling between the wells at the frequency g provides a coherent coupling between identical electronic states in the two wells, which leads to the formation of interwell dressed states. The macroscopic interwell coherence of the BEC wave function results in the formation of two ultranarrow absorption resonances for the probe field that are inside of the ordinary EIT transparency window. We show that these new resonances can be interpreted in terms of the interwell dressed states and the formation of a type of dark state involving the control laser and the interwell tunneling. To either side of these ultranarrow resonances there is normal dispersion with very large slope controlled by g. We discuss prospects for observing these ultranarrow resonances and the corresponding regions of high dispersion experimentally.

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2008. Vol. 78, nr 1, artikkel-id 013830
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URN: urn:nbn:se:du-11203DOI: 10.1103/PhysRevA.78.013830ISI: 000258180300228OAI: oai:DiVA.org:du-11203DiVA, id: diva2:565620
Tilgjengelig fra: 2012-11-07 Laget: 2012-11-07 Sist oppdatert: 2017-12-07bibliografisk kontrollert

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