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dc.creatorSahrai, M.
dc.creatorTajalli, H.
dc.creatorKapale, KT
dc.creatorZubairy, M. Suhail.
dc.date.accessioned2011-09-08T21:36:14Z
dc.date.available2011-09-08T21:36:14Z
dc.date.issued2005
dc.identifier.citationM. Sahrai, H. Tajalli, KT Kapale and M. Suhail Zubairy. Phys.Rev.A 72 013820 2005. "Copyright (2005) by the American Physical Society."en
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevA.72.013820
dc.identifier.urihttp://hdl.handle.net/1969.1/126583
dc.descriptionJournals published by the American Physical Society can be found at http://publish.aps.org/en
dc.description.abstractWe propose a scheme for subwavelength localization of an atom conditioned upon the absorption of a weak probe field at a particular frequency. Manipulating atom-field interaction on a certain transition by applying drive fields on nearby coupled transitions leads to interesting effects in the absorption spectrum of the weak probe field. We exploit this fact and employ a four-level system with three driving fields and a weak probe field, where one of the drive fields is a standing-wave field of a cavity. We show that the position of an atom along this standing wave is determined when probe-field absorption is measured. We find that absorption of the weak probe field at a certain frequency leads to subwavelength localization of the atom in either of the two half-wavelength regions of the cavity field by appropriate choice of the system parameters. We term this result as sub-half-wavelength localization to contrast it with the usual atom localization result of four peaks spread over one wavelength of the standing wave. We observe two localization peaks in either of the two half-wavelength regions along the cavity axis.en
dc.language.isoen
dc.publisherAmerican Physical Society
dc.subjectELECTROMAGNETICALLY INDUCED TRANSPARENCYen
dc.subjectAUTLER-TOWNES MICROSCOPYen
dc.subjectPOSITION MEASUREMENTen
dc.subjectSPONTANEOUS EMISSIONen
dc.subjectOPTICAL-FIELDSen
dc.subjectQUANTUMen
dc.subjectINTERFERENCEen
dc.subjectSINGLE-ATOMen
dc.subjectDIFFRACTIONen
dc.subjectINTERFEROMETRYen
dc.subjectSPECTROSCOPYen
dc.subjectOpticsen
dc.subjectPhysicsen
dc.titleSubwavelength atom localization via amplitude and phase control of the absorption spectrumen
dc.typeArticleen
local.departmentPhysics and Astronomyen


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