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X-ORIGINAL-URL:https://iqus.uw.edu/
X-WR-CALNAME:IQuS
X-WR-CALDESC:InQubator for Quantum Simulation
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UID:MEC-487d4c6a324446b3fa45b30cfcee5337@iqus.uw.edu
DTSTART:20240306T193000Z
DTEND:20240306T203000Z
DTSTAMP:20240131T173200Z
CREATED:20240131
LAST-MODIFIED:20240306
PRIORITY:5
SEQUENCE:0
TRANSP:OPAQUE
SUMMARY:Does provable absence of barren plateaus imply classical simulability?
DESCRIPTION:Zoë Holmes, Swiss Federal Institute of Technology Lausanne\n\nNote the unusual start time!\n\nA large amount of effort has recently been put into understanding the barren plateau phenomenon. In this talk, we face the increasingly loud elephant in the room and ask a question that has been hinted at by many but not explicitly addressed: Can the structure that allows one to avoid barren plateaus also be leveraged to efficiently simulate the loss classically? We present strong evidence that commonly used models with provable absence of barren plateaus are also classically simulable, provided that one can collect some classical data from quantum devices during an initial data acquisition phase. This follows from the observation that barren plateaus result from a curse of dimensionality, and that current approaches for solving them end up encoding the problem into some small, classically simulable, subspaces. This sheds serious doubt on the non-classicality of the information processing capabilities of parametrized quantum circuits for barren plateau-free landscapes and on the possibility of superpolynomial advantages from running them on quantum hardware. We end by discussing caveats in our arguments, the potential of smart initializations, and by highlighting new opportunities that our perspective raises.\n\n
URL:https://iqus.uw.edu/events/zoe-holmes-swiss-federal-institute-of-technology-lausanne/
ORGANIZER;CN=Dorota Grabowska:MAILTO:grabow@uw.edu
CATEGORIES:Seminars
LOCATION:UW, 15th and Pacific, Seattle
ATTACH;FMTTYPE=image/jpeg:https://iqus.uw.edu/wp-content/uploads/2024/01/Zoe-Holmes.jpeg
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