Tightening Quantum Speed Limits for Almost All States
Author(s): Francesco Campaioli, Felix A. Pollock, Felix C. Binder, and Kavan Modi
Conventional quantum speed limits perform poorly for mixed quantum states: They are generally not tight and often significantly underestimate the fastest possible evolution speed. To remedy this, for unitary driving, we derive two quantum speed limits that outperform the traditional bounds for almos...
[Phys. Rev. Lett. 120, 060409] Published Fri Feb 09, 2018