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Friday, April 01, 2022
11:00 AM - 12:00 PM
Online and In-Person Event

IQIM Postdoctoral and Graduate Student Seminar

A mathematical definition of the abelian group Q(X) := quantum cellular automata / finite depth quantum circuits and ancilla residing on a space X
Michael Freedman, USCB/Microsoft,

Joint HEP/IQIM Seminar

Abstract: It is pretty clear intuitively what one should mean by QCA/FDQC but setting up the definitions to work functorially on both compact and noncompact spaces reveals several interesting points. Since Hastings, Haah, Fidkowski, and others are finding fascinating elements of this group, it is worthwhile to phrase a rigorous definition, and to define both forward and transfer maps for this functor.

Attendance is limited. Attendees joining in person must have a valid Caltech UID. Please show your UID at the door [Annenberg 105].

The talk will also be live via this link:

For more information, please contact Marcia Brown by phone at 626-395-4013 or by email at