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dc.creatorOspelkaus, S
dc.creatorNi, KK
dc.creatorDe Miranda, MHG
dc.creatorNeyenhuis, B
dc.creatorWang, D
dc.creatorKotochigova, S
dc.creatorJulienne, PS
dc.creatorJin, DS
dc.creatorYe, J
dc.date.accessioned2021-02-07T18:05:09Z
dc.date.available2021-02-07T18:05:09Z
dc.date.issued2009-09-25
dc.identifier.issn1359-6640
dc.identifier.issn1364-5498
dc.identifier.doihttp://dx.doi.org/10.34944/dspace/6050
dc.identifier.other483NW (isidoc)
dc.identifier.other20151553 (pubmed)
dc.identifier.urihttp://hdl.handle.net/20.500.12613/6068
dc.description.abstractWe report the creation and characterization of a near quantum-degenerate gas of polar 40K-87Rb molecules in their absolute rovibrational ground state. Starting from weakly bound heteronuclear KRb Feshbach molecules, we implement precise control of the molecular electronic, vibrational, and rotational degrees of freedom with phase-coherent laser fields. In particular, we coherently transfer these weakly bound molecules across a 125 THz frequency gap in a single step into the absolute rovibrational ground state of the electronic ground potential. Phase coherence between lasers involved in the transfer process is ensured by referencing the lasers to two single components of a phase-stabilized optical frequency comb. Using these methods, we prepare a dense gas of 4 × 104 polar molecules at a temperature below 400 nK. This fermionic molecular ensemble is close to quantum degeneracy and can be characterized by a degeneracy parameter of T/TF = 3. We have measured the molecular polarizability in an optical dipole trap where the trap lifetime gives clues to interesting decay mechanisms. Given the large measured dipole moment of the KRb molecules of 0.5 Debye, the study of quantum degenerate molecular gases interacting via strong dipolar interactions is now within experimental reach. PACS numbers: 37.10.Mn, 37.10.Pq. © 2009 The Royal Society of Chemistry.
dc.format.extent351-359
dc.language.isoen
dc.relation.haspartFaraday Discussions
dc.relation.isreferencedbyRoyal Society of Chemistry (RSC)
dc.subjectphysics.atom-ph
dc.subjectphysics.atom-ph
dc.subjectcond-mat.other
dc.titleUltracold polar molecules near quantum degeneracy
dc.typeArticle
dc.type.genreJournal Article
dc.relation.doi10.1039/b821298h
dc.ada.noteFor Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu
dc.date.updated2021-02-07T18:05:06Z
refterms.dateFOA2021-02-07T18:05:09Z


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