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          Institute: MPI für Quantenoptik     Collection: Laser Physics     Display Documents



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ID: 16948.0, MPI für Quantenoptik / Laser Physics
Sharpening accepted thermodynamic wisdom via quantum control: or cooling to an internal temperature of zero by external coherent control fields without spontaneous emission
Authors:Scully, Marlan O.; Aharonov, Yakir; Kapale, Kishore T.; Tannor, David J.; Süßmann, Georg; Walther, Herbert
Language:English
Date of Publication (YYYY-MM-DD):2002-11
Title of Journal:Journal of Modern Optics
Journal Abbrev.:J. Mod. Opt.
Volume:49
Issue / Number:14-15 Sp. Iss. SI
Start Page:2297
End Page:2307
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Cooling of internal atomic and molecular states via optical pumping and laser cooling of the atomic velocity distribution, rely on spontaneous emission. The outstanding success of such examples, taken together with general arguments, has led to the widely held notion that radiative cooling requires spontaneous emission. We here show by specific examples and direct calculation, based primarily on breaking emission-absorption symmetry as in lasing without inversion, that cooling of internal states by external coherent control fields is possible. We also show that such coherent schemes allow us to practically reach absolute zero in a finite number of steps, in contrast to some statements of the third law of thermodynamics.
External Publication Status:published
Document Type:Article
Communicated by:Herbert Walther
Affiliations:MPI für Quantenoptik/Laser Physics
External Affiliations:Texas A&M Univ, Inst Quantum Studies, College Stn, TX 77843 USA; Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA; Univ S Carolina, Dept Phys, Columbia, SC 29208 USA; Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel; Weizmann Inst Sci, Dept Chem Phys, IL-76100 Rehovot, Israel
Identifiers:ISI:000180770500004
ISSN:0950-0340
URL:http://taddeo.ingentaselect.com/vl=1424047/cl=22/n...
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