NPhoton.9.326.(2015)(Quantum many-body models with cold atoms coupled to photonic crystals)英文文献资料

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1、ARTICLESPUBLISHEDONLINE:6APRIL2015DOI:10.1038/NPHOTON.2015.57Quantummany-bodymodelswithcoldatomscoupledtophotoniccrystalsJ.S.Douglas11,C.-L.Hung2†,A.V.Gorshkov3,H.J.Kimble2andD.E.Chang1,H.HabibianUsingcoldatomstosimulatestronglyinteractingquantumsystemsisanexcitingfrontierofphysics.However,b

2、ecauseatomsarenominallyneutralpointparticles,thislimitsthetypesofinteractionthatcanbeproduced.Weproposetousethepowerfulnewplatformofcoldatomstrappednearnanophotonicsystemstoextendtheselimits,enablinganovelquantummaterialinwhichatomicspindegreesoffreedom,motionandphotonsstronglycoupleoverlong

3、distances.Inthissystem,anatomtrappednearaphotoniccrystalseedsalocalized,tunablecavitymodearoundtheatomicposition.Wefindthatthiseffectivecavityfacilitatesinteractionswithotheratomswithinthecavitylength,inawaythatcanbemaderobustagainstrealisticimperfections.Finally,weshowthatsuchphenomenashould

4、beaccessibleusingone-dimensionalphotoniccrystalwaveguidesinwhichcouplingtoatomshasalreadybeenexperimentallydemonstrated.rappedultracoldatomsarearichresourceforphysicists.quantum-electrodynamics(QED),allowingintuitionandresultstoTIsolatedfromtheenvironmentandroutinelymanipulated,betransferred

5、fromthiswell-developedfield.Whenmanyatomstheycanactasaquantumsimulatorforawidevarietyofphys-aretrapped,thesedynamicallyinducedcavitiesmediatecoherenticalmodels1.However,althoughshort-rangeinteractionsbetweeninteractionsbetweenatoms25,26.TheinteractionscanextendoveratomscanbeadjustedbyFeshbach

6、resonance,thesesystemstypi-distancesontheorderof100opticalwavelengthsandwedescribecallylackthelong-rangeinteractionsrequiredtoproducesomeofhere,forthefirsttime,theprinciplesofhowthislong-rangecoup-themostinterestingcondensed-matterphenomena.Forexample,lingbetweenatomscanbeachievedandtunedinth

7、eframeworkofexoticphasessuchassupersolidsarepredictedinsystemswithcurrentexperiments.long-rangeinteractions2,aswellasWignercrystallization3andtopo-Inparticular,goingbeyondearlierworkinthisarea6,25–30,welogicalstates4.Long-rangeinteractionscanalsole