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SUMMARY:Interfacing Spins with Photons for Quantum Simulation and Quantum 
 Control - Prof. Monika Schleier-Smith\, Stanford University 
DTSTART:20180906T143000Z
DTEND:20180906T153000Z
UID:TALK109600@talks.cam.ac.uk
CONTACT:Kayleigh Dunn
DESCRIPTION:Coupling many atoms to a single mode of light provides an effi
 cient means of spreading quantum information across an extended many-body 
 system.  I will report on experiments in which we harness photons in an op
 tical cavity to mediate “flip-flop” interactions among distant spins i
 n a millimeter-long cloud of atoms.  We characterize the spin-exchange int
 eractions via quench dynamics and imaging of the local magnetization\, dem
 onstrating optical control of the interactions' strength and sign.  Furthe
 rmore\, we observe signatures of correlated pair creation in Zeeman states
  of a spin-1 system\, a light-mediated analog of collisional spin mixing i
 n Bose-Einstein condensates.  In contrast to direct collisional interactio
 ns\, non-local photon-mediated interactions offer unprecedented opportunit
 ies for engineering the spatial structure of spin-spin couplings and corre
 lations.  I will describe prospects for tailoring the interactions to enab
 le new directions in quantum simulation and to generate new resources for 
 quantum-enhanced sensing.
LOCATION:Ryle Seminar Room (930) 
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