Optimal control of quantum evolution: quantum state transformation, cooling, and nonadiabatic braiding

Theory Seminars

Speaker: Armin Rahmani, University of British Columbia
Date & Time: November 10, 2014, 12:00 - 13:00
Location: UBC, Hennings 318
Local Contact: Ian Affleck
Intended Audience: Graduate

Nonadiabatic unitary evolution with tailored time-dependent Hamiltonians can prepare many-body quantum states with various desired properties. We explore novel application of optimal control to problems ranging from cooling cold atoms beyond the current state of the art to beating the barrier of adiabaticity in the braiding of non-Abelian anyons. We show that highly nonadiabatic “bang-bang” protocols provide powerful shortcuts to the adiabatic evolution.