题目：Shortcuts to Adiabaticity via Adaptive Quantum Zeno Measurements

报告人：Adolfo del Campo    (University of Luxembourg & DIPC)

邀请人：Gentaro Watanabe

时间：10:30, October 16 (Fri.)

地点：Room 324, No. 8 Hainayuan Building

We consider the quantum Zeno dynamics arising from monitoring a time-dependent projector. Starting from a stroboscopic measurement protocol, it is shown that the effective Hamiltonian for Zeno dynamics involves a nonadiabatic geometric connection that takes the form of the Kato-Avron Hamiltonian for parallel transport, stirring the evolution within the time-dependent Zeno subspace. The latter reduces to counterdiabatic driving when projective measurements are performed in the instantaneous energy eigenbasis of the quantum system. The effective Zeno Hamiltonian can also be derived in the context of continuous quantum measurements of a time-dependent observable and the non-Hermitian evolution with a complex absorbing potential varying in time. Our results thus provide a unified framework for realizing shortcuts to adiabaticity via adaptive quantum Zeno measurements.

Short Biography: 

Adolfo del Campo is a professor of theoretical physics at the University of Luxembourg. He is notable as one of the pioneers of shortcuts to adiabaticity in quantum control. He was elected a Fellow of the American Physical Society in 2023 in the Division of Quantum Information. Before moving to Luxembourg, he was a J. Robert     Oppenheimer Fellow at Los Alamos National   Laboratory, an associate professor at the University of Massachusetts Boston, and a distinguished research professor at the Donostia International Physics Center. During his career, del Campo has published over 100 peer-reviewed papers, with seminal contributions to shortcuts to adiabaticity in quantum control, quantum speed limits, critical phenomena, and quantum optimization algorithms.