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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:2
UID:UW-Physics-Event-8468
DTSTART:20240419T203000Z
DTEND:20240419T220000Z
DTSTAMP:20260413T223510Z
LAST-MODIFIED:20240415T135657Z
LOCATION:2241 Chamberlin Hall
SUMMARY:Dual-Species Quantum Processors and Quantum Networks\, Physics
  Department Colloquium\, Hannes Bernien\, University of Chicago
DESCRIPTION:Reconfigurable arrays of neutral atoms are an exciting pla
 tform to study quantum many-body phenomena and quantum information pro
 tocols. Their excellent coherence combined with programmable Rydberg i
 nteractions have led to intriguing observations such as quantum phase 
 transitions\, the discovery of quantum many-body scars\, and novel qua
 ntum computing architectures.
\nHere\, I will introduce new methods fo
 r controlling and measuring atom arrays that open up compelling direct
 ions in quantum state control\, quantum feedback and many-body physics
 . First\, I will introduce a dual-species atomic array in which the se
 cond atomic species can be used to measure and control the primary spe
 cies. We use an array of cesium qubits to correct correlated phase err
 ors on an array of rubidium data qubits [1]. Rydberg interactions betw
 een the two species lead to novel regimes\, including greatly enhanced
  resonant dipole interactions\, that we use to demonstrate a 2-qubit g
 ate and quantum non-demolition readout [2]. 
\n
\nAn alternative\, hyb
 rid approach for engineering interactions and scaling these quantum sy
 stems is the coupling of atoms to nanophotonic structures in which pho
 tons mediate interactions between atoms. Such a system can function as
  the building block of a large-scale quantum network. In this context\
 , I will present quantum network node architectures that are capable o
 f long-distance entanglement distribution at telecom wavelengths [3] a
 nd show how to combine atom-array capabilities with large photonic chi
 ps [4]. 
\n
\n
\n[1] Singh\, Bradley\, Anand\, Ramesh\, White\, Bernie
 n\, Science 380\, 1265 (2023)
\n[2] Anand\, Bradley\, White\, Ramesh\,
  Singh\, Bernien\, arXiv:2401.10325 (2024)
\n[3] Menon\, Singh\, Borre
 gaard\, Bernien NJP 22\, 073033 (2020)
\n[4] Menon\, Glachman\, Pompil
 i\, Dibos\, Bernien\, arXiv:2311.02153 (2023)
\n
URL:https://www.physics.wisc.edu/events/?id=8468
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