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UID:UW-Physics-Event-8140
DTSTART:20230202T170000Z
DTEND:20230202T180000Z
DTSTAMP:20260414T033342Z
LAST-MODIFIED:20230112T051035Z
LOCATION:This event is open to Chicago Quantum Exchange Members\, Part
 ners\, and Trainee. To request attendance\, contact quantum@uchicago.e
 du.
SUMMARY:CQE Seminar: Ultrafast quantum simulation and quantum computin
 g with ultracold atom arrays \, Wisconsin Quantum Institute\, Kenji Oh
 mori\, Institute for Molecular Science\, National Institutes of Natura
 l Sciences (NINS)\, Japan
DESCRIPTION:Many-body correlations drive a variety of important quantu
 m phenomena and quantum machines including superconductivity and magne
 tism in condensed matter as well as quantum computers. Understanding a
 nd controlling quantum many-body correlations is thus one of the centr
 al goals of modern science and technology. My research group has recen
 tly pioneered a novel pathway towards this goal by exciting strongly i
 nteracting ultracold Rydberg atoms\, far beyond the Rydberg blockade r
 egime\, by using an ultrafast laser pulse. We first applied our ultraf
 ast coherent control with attosecond precision to a random ensemble of
  those Rydberg atoms in an optical dipole trap\, and successfully obse
 rved and controlled their strongly correlated electron dynamics on a s
 ub-nanosecond timescale. This new approach is now applied to arbitrary
  atom arrays assembled with optical lattices or optical tweezers that 
 develop into a pathbreaking platform for quantum simulation and quantu
 m computing on an ultrafast timescale.<br>\n<br>\nIn this ultrafast qu
 antum computing\, very recently\, we have succeeded in executing a con
 trolled-Z gate in only 6.5 nanoseconds. This is the fastest record of 
 a controlled gate\, a conditional two-qubit gate essential for quantum
  computing\, faster than any other controlled gates with cold-atom har
 dware by two orders of magnitude. It is also two orders of magnitude f
 aster than the noise from the external environment and operating laser
 s\, whose timescale is in general 1 microsecond or slower\, and thus c
 an be safely isolated from the noise.
URL:https://www.physics.wisc.edu/events/?id=8140
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