期刊
PHYSICAL REVIEW LETTERS
卷 110, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.050403
关键词
-
资金
- U.S. Department of Energy
- Basque Government [IT-559-10]
- UPV/EHU UFI [11/55]
- STREP PICC
- Alexander von Humboldt Foundation
- Integrated project QEssence
- LANL J. Robert Oppenheimer fellowship
Bounds to the speed of evolution of a quantum system are of fundamental interest in quantum metrology, quantum chemical dynamics, and quantum computation. We derive a time-energy uncertainty relation for open quantum systems undergoing a general, completely positive, and trace preserving evolution which provides a bound to the quantum speed limit. When the evolution is of the Lindblad form, the bound is analogous to the Mandelstam-Tamm relation which applies in the unitary case, with the role of the Hamiltonian being played by the adjoint of the generator of the dynamical semigroup. The utility of the new bound is exemplified in different scenarios, ranging from the estimation of the passage time to the determination of precision limits for quantum metrology in the presence of dephasing noise. DOI: 10.1103/PhysRevLett.110.050403
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据