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DTSTART:20180325T030000
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DTSTART:20171029T020000
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DTSTAMP:20260427T120028Z
UID:59b2853d0d012827765830@ist.ac.at
DTSTART:20171030T100000
DTEND:20171030T110000
DESCRIPTION:Speaker: Hannes Bernien\nhosted by Georgios Katsaros\nAbstract:
  The realization of large-scale controlled quantum systems is an exciting 
 frontier in modern physical science. In this talk\, I will introduce a new
  approach based on cold atoms in arrays of optical tweezers. We use atom-b
 y-atom assembly to deterministically prepare arrays of individually contro
 lled cold atoms. A measurement and feedback procedure eliminates the entro
 py associated with the probabilistic trap loading and results in defect-fr
 ee arrays of over 60 atoms [1]. Strong\, coherent interactions are enabled
  by coupling to atomic Rydberg states. We realize a programmable Ising-typ
 e quantum spin model with tunable interactions and system sizes of up to 5
 1 qubits. Within this model we observe transitions into ordered states (Ry
 dberg crystals) that break various discrete symmetries\, verify high-fidel
 ity preparation of ordered states\, and investigate dynamics across the ph
 ase transition in large arrays of atoms [2].An alternative\, hybrid approa
 ch for engineering interactions is the coupling of atoms to nanophotonic s
 tructures in which guided photons mediate interactions between atoms. I wi
 ll discuss our progress towards entangling two atoms that are coupled to a
  photonic crystal cavity and I will outline the exciting prospects of this
  approach for scaling the system to large distances in a quantum network.[
 1] Science 354\, 1024 (2016)[2] arXiv:1707.04344 (2017)
LOCATION:Big Seminar room Ground floor / Office Bldg West (I21.EG.101)\, IS
 TA
ORGANIZER:pdelreal@ist.ac.at
SUMMARY:Hannes Bernien: Quantum LEGOs: Building large quantum systems atom-
 by-atom
URL:https://talks-calendar.ista.ac.at/events/878
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