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SUMMARY:Arthur Parzygnat (MIT)
DTSTART:20241126T213000Z
DTEND:20241126T223000Z
DTSTAMP:20260423T021139Z
UID:MathPic/136
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/MathPic/136/
 ">A temporal analogue of quantum states for sequential measurements and ti
 me-reversal symmetry</a>\nby Arthur Parzygnat (MIT) as part of Mathematica
 l Picture Language Seminar\n\nLecture held in Jefferson 356 and Zoom https
 ://harvard.zoom.us/j/779283357?pwd=MitXVm1pYUlJVzZqT3lwV2pCT1ZUQT09.\n\nAb
 stract\nIf a quantum state distributed over regions of space provides the 
 expectation values of observables on those regions\, what object provides 
 the expectation values of observables measured sequentially in time? We wi
 ll first provide a rigorous definition of such quantum "states over time".
  Using such a definition will naturally lead us to an extension of Bayes' 
 rule from classical probability to quantum systems. Such a quantum Bayes' 
 rule provides concrete predictions for the construction of processes that 
 admit time-reversal symmetric expectation values of measurements. We will 
 analyze the concrete example of an amplitude-damping channel on qubits.\n\
 nPasscode: 657361\n
LOCATION:https://researchseminars.org/talk/MathPic/136/
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