IQIM Postdoctoral and Graduate Student Seminar

Friday February 7, 2020 12:00 PM

Conformal field theories are magical

Speaker: Christopher White, University of Maryland Condensed Matter Theory Center
Location: East Bridge 114

Abstract: "Magic" measures the degree to which a state cannot be approximated the result of Clifford gates; consequently, it can measure both the difficulty of state preparation on a quantum computer, and the degree to which entanglement is non-Bell-pair.

I will give a moderately pedagogical introduction to magic. I will then show numerical calculations of the mana of ground states of the one-dimensional Z3 Potts model, chosen for convenience, in which we find that the mana is extensive and peaked at the phase transition. I will then comment on the implications of this fact both for quantum simulation of field theories and for AdS-CFT-motivated Ans├Ątze for CFT ground states.

Series IQIM Postdoctoral and Graduate Student Seminar Series

Contact: Marcia Brown at 626-395-4013 marciab@caltech.edu