Quantum-info-group March 2023

quantum-info-group@lists.fas.harvard.edu

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Harvard Quantum Information Group Meeting Thursday at 4:30 pm

by Cotler, Jordan Saul

Hi everyone, We are restarting the Harvard Quantum Information Group Meeting this semester. The first meeting will be held this Thursday, March 2nd at 4:30 pm in Jefferson 250. Anthony (Chi-Fang) Chen from Caltech will be speaking. Title: Worst-case and average-case separation in quantum simulation and quantum dynamics Abstract: Physical Hamiltonians are often a sum over k-body (k-local) terms. In this talk, we draw connections between this locality and the ubiquitous separation between worst-case and average-case properties. We present two examples: quantum simulation using product formula enjoys an average-case vs. worst-case speedup; quantum dynamics in power-law interacting systems is qualitatively different for the finely-tuned states and the typical states. The main technical framework uses "uniform smoothness" for matrix martingales to exploit the k-locality structure. Hope to see you all there. Sincerely, Jordan Cotler

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Quantum-info-group March 2023