Tightening Quantum Speed Limits for Almost All States

• Main Authors: Campaioli, Francesco, Binder, Felix Christoph, Pollock, Felix A., Modi, Kavan
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2018
• Subjects: Quantum Communication; Quantum Control
• Online Access: https://hdl.handle.net/10356/88308; http://hdl.handle.net/10220/44588
• Institution: Nanyang Technological University

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...