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SUMMARY:Dipolar QED: an alternative paradigm for quantum optics\, sensors\
 , and non-equilibrium dynamics - Charles Adams (Durham University)
DTSTART:20150622T143000Z
DTEND:20150622T160000Z
UID:TALK59450@talks.cam.ac.uk
CONTACT:6270
DESCRIPTION:In dipolar QED (dQED) the effect of neighbouring dipoles domin
 ate the interaction between an emitter and the electromagnetic field (simi
 lar to the effect of a cavity in cavity QED). The strong coupling regime o
 f dQED is characterised by the hopping of excitations (photons) between di
 poles  and for regular arrays maps onto a XY spin model [1]. The hopping o
 f virtual photons can also be detected as a level shift which for an ensem
 ble is referred to as the N atom Lamb shift. In terms of applications\, by
  mixing optical and microwave dipoles in the dQED regime it is possible to
  realise large single photon non-linearities [3] and detect weak fields by
  inducing a phase transition [4].\n\n\n\n[1] Barredo et al\, http://journa
 ls.aps.org/prl/abstract/10.1103/PhysRevLett.114.113002\n[2] Keaveney et al
 \, http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.108.173601\n[3
 ] Maxwell et al\, http://journals.aps.org/prl/abstract/10.1103/PhysRevLett
 .110.103001\n[4] Carr et al\, http://journals.aps.org/prl/abstract/10.1103
 /PhysRevLett.111.113901\n
LOCATION:Rutherford building\, Seminar Room B
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