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Electromagnetically induced transparency and fourwave mixing in a cold atomic ensemble with large optical depth

Geng, Jiao; Campbell, Geoff; Bernu, Julien; Higginbottom, Daniel; Sparkes, Benjamin; Assad, Syed; Zhang, Weiping; Robins, Nicholas; Lam, Ping Koy; Buchler, Benjamin

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We report on the delay of optical pulses using electromagnetically induced transparency (EIT) in an ensemble of cold atoms with an optical depth exceeding 500. To identify the regimes in which four-wave mixing (4WM) impacts on EIT behaviour, we conduct the experiment in both 85Rb and 87Rb. Comparison with theory shows excellent agreement in both isotopes. In 87Rb negligible 4WM was observed and we obtained one pulse-width of delay with 50% efficiency. In 85Rb 4WM contributes to the output. In...[Show more]

dc.contributor.authorGeng, Jiao
dc.contributor.authorCampbell, Geoff
dc.contributor.authorBernu, Julien
dc.contributor.authorHigginbottom, Daniel
dc.contributor.authorSparkes, Benjamin
dc.contributor.authorAssad, Syed
dc.contributor.authorZhang, Weiping
dc.contributor.authorRobins, Nicholas
dc.contributor.authorLam, Ping Koy
dc.contributor.authorBuchler, Benjamin
dc.date.accessioned2015-12-13T22:34:51Z
dc.identifier.issn1367-2630
dc.identifier.urihttp://hdl.handle.net/1885/76319
dc.description.abstractWe report on the delay of optical pulses using electromagnetically induced transparency (EIT) in an ensemble of cold atoms with an optical depth exceeding 500. To identify the regimes in which four-wave mixing (4WM) impacts on EIT behaviour, we conduct the experiment in both 85Rb and 87Rb. Comparison with theory shows excellent agreement in both isotopes. In 87Rb negligible 4WM was observed and we obtained one pulse-width of delay with 50% efficiency. In 85Rb 4WM contributes to the output. In this regime we achieve a delay-bandwidth product of 3.7 at 50% ef ficiency, allowing temporally multimode delay, which we demonstrate by compressing two pulses into the memory medium.
dc.publisherInstitute of Physics Publishing
dc.rightsAuthor/s retain copyright
dc.sourceNew Journal of Physics
dc.titleElectromagnetically induced transparency and fourwave mixing in a cold atomic ensemble with large optical depth
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume16
dc.date.issued2014
local.identifier.absfor020000 - PHYSICAL SCIENCES
local.identifier.ariespublicationU3488905xPUB5149
local.type.statusPublished Version
local.contributor.affiliationGeng, Jiao, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationCampbell, Geoff, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationBernu, Julien, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationHigginbottom, Daniel, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationSparkes, Benjamin, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationAssad, Syed, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationZhang, Weiping, East China Normal University
local.contributor.affiliationRobins, Nicholas, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationLam, Ping Koy, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationBuchler, Benjamin, College of Physical and Mathematical Sciences, ANU
local.bibliographicCitation.startpage113053/1
local.bibliographicCitation.lastpage11
local.identifier.doi10.1088/1367-2630/16/11/113053
dc.date.updated2015-12-11T09:24:29Z
local.identifier.scopusID2-s2.0-84918777921
local.identifier.thomsonID000346764000005
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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