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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:3
UID:UW-Physics-Event-6597
DTSTART:20220204T213000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T113316Z
LAST-MODIFIED:20220131T123606Z
LOCATION:2241 Chamberlin Hall
SUMMARY:Quantum computing with neutral Yb atoms\, Physics Department C
 olloquium\, Jeff Thompson\, Princeton
DESCRIPTION:Quantum computing with neutral atoms has progressed rapidl
 y in recent years\, combining large system sizes\, flexible and dynami
 c connectivity\, and quickly improving gate fidelities. The pioneering
  work in this field has been implemented using alkali atoms\, primaril
 y rubidium and cesium. However\, divalent\, alkaline-earth-like atoms 
 such as ytterbium offer significant technical advantages. In this talk
 \, I will present our progress on quantum computing using 171-Yb atoms
 \, including high-fidelity imaging\, nuclear spin qubits with extremel
 y long coherence times\, and two-qubit gates on nuclear spins using Ry
 dberg states [1\,2]. I will also discuss several unexpected benefits o
 f alkaline-earth-atoms: an extremely robust and power-efficient local 
 gate addressing scheme [3]\, and a novel approach to quantum error cor
 rection called “erasure conversion”\, which has the potential to i
 mplement the surface code with a threshold exceeding 4%\, using the un
 ique level structure of 171-Yb to convert spontaneous emission events 
 into erasure errors [4]. Time permitting\, I will also discuss a new p
 roject to implement very high fidelity quantum computing and simulatio
 n using circular Rydberg states with 100-second lifetimes [5].
\n
\n[1
 ] S. Saskin et al\, Phys. Rev. Lett. 122\, 143002 (2019).
\n[2] A. P. 
 Burgers et al\, arXiv:2110.06902 (2021).
\n[3] S. Ma\, A. P. Burgers\,
  et al\, arXiv: 2112.06799 (2021).
\n[4] Y. Wu\, et al: arXiv:2201.035
 40 (2022).
\n[5] S. R. Cohen et al\, PRX Quantum 2\, 030322 (2021).
\n
URL:https://www.physics.wisc.edu/events/?id=6597
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