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SUMMARY:Crosstalk Insensitive Trapped-Ion Entanglement through Coupling Matrix Engineering
DESCRIPTION:
Optical crosstalk due to imperfect addressing in
      trapped-ion entangling gates generates unwanted nonlocal
      entanglement between target ions and their combined set of
      neighbors. I will present a method for performing entangling
      operations that are inherently insensitive to crosstalk by
      engineering the effective qubit-qubit coupling matrix such that
      target and neighbor ions are uncoupled. This approach requires no
      knowledge of the amount of crosstalk present and avoids the need
      for additional gate operations or modifications to the optical
      setup. I will describe the numeric construction of
      crosstalk-insensitive entangling pulses for target ion pairs
      within an equispaced 20-ion string and an experimental validation
      of coupling matrix engineering for crosstalk-insensitive
      entanglement in a 3-ion string. An article on this work was
      recently published in Physical Review Letters (PRL 136,
      253601).


LOCATION:IQOQI - lecture hall
DTSTART:20260825T140000
DTEND:20260825T150000
TZID: Europe/Vienna
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