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SUMMARY:Dynamical quantum error correction and non-invertible symmetries -
  Rajath Radhakrishnan (University of Oxford)
DTSTART:20251104T140000Z
DTEND:20251104T153000Z
UID:TALK240298@talks.cam.ac.uk
DESCRIPTION:Quantum error correction is essential for reliably storing and
  manipulating information in quantum devices. In this talk\, I will review
  dynamical quantum error-correcting codes\, which involve sequences of non
 -commuting measurements. The dynamical nature of these codes offers severa
 l advantages over static codes\, but also introduces new challenges\, sinc
 e errors must now be tracked across both space and time.\nI will show that
  the measurement sequences underlying dynamical stabilizer codes can be un
 derstood as non-invertible symmetries of certain topological quantum field
  theories. In this framework\, a sequence of measurements corresponds to t
 he fusion of these topological symmetry operators. Using this approach\, I
  will present a characterization of both error detectors and detectable er
 rors in dynamical codes\, entirely in terms of the braiding of specific to
 pological operators.
LOCATION:Seminar Room 2\, Newton Institute
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