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SUMMARY:Long-range entanglement and multistability in a lossy qubit array 
 - Shovan Dutta
DTSTART:20200721T130000Z
DTEND:20200721T140000Z
UID:TALK150130@talks.cam.ac.uk
CONTACT:nrc25
DESCRIPTION:We identify a simple experimental setting of a locally pumped 
 and lossy array of two-level quantum systems that can stabilize multiple h
 ighly coherent steady states. By analytic construction\, we show there is 
 an extensive set of steady-state density operators\, from minimally to max
 imally entangled\, despite this being an interacting open many-body proble
 m. These nonequilibrium states arise from a hidden symmetry that stabilize
 s Bell pairs over arbitrarily long distances\, leading to controllable lon
 g-range entanglement. We show how to selectively prepare and observe the s
 teady states in existing setups. Our conclusions apply to a broad range of
  two-level systems.\n\nThe talk will be based on\n[1] arXiv 2004.07981 (ma
 in reference)\n[2] arXiv 2007.08938.
LOCATION:CPGM group on MS Teams
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