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SUMMARY:Classically simulating quantum computations - Oliver Reardon-Smith
 \, Center for Theoretical Physics\, Polish Academy of Sciences
DTSTART:20231123T141500Z
DTEND:20231123T153000Z
UID:TALK208537@talks.cam.ac.uk
CONTACT:Sergii Strelchuk
DESCRIPTION:In addition to being of obvious practical use\, classical simu
 lations of quantum computations have interesting theoretical implications.
  Intuitively those computations which may be efficiently simulated by a cl
 assical computer are somehow "less quantum" while those which are prohibit
 ively expensive to simulate classically are "more quantum". I will discuss
  some ways of quantifying nonclassicality in the form of "magic" resources
  required to implement them. Recent work (arXiv:2307.12912\, arXiv:2307.12
 654 and arXiv:2307.12702) has extended results known from the Clifford/sta
 bilizer subtheory of quantum mechanics to fermionic linear optics. I will 
 present some of these results with a particular emphasis on contrasting wh
 at is known about different classically simulable subtheories of quantum m
 echanics. There are many open questions but it appears that stabilizer qua
 ntum mechanics emerges as qualitatively different to the other examples wh
 ich have been studied.
LOCATION:MR2
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