Southwest Quantum Information and Technology

Speed limits for quantum control of local spin systems

Presenting Author: Jeffrey Epstein, UC Berkeley
Contributing Author(s): Birgitta Whaley

We show that the fundamental limits on quantum many-body dynamics from the Lieb-Robinson bound yield speed limits on two quantum control tasks, state transfer and entanglement sharing. We derive analytic speed limits on these tasks in nearest-neighbor coupled spin chains and lattices, providing optimal speeds for comparison with numerical optimal control results in the many-body setting.

(Session 2 : Thursday from 11:45am - 12:15pm)