A Note on Fundamental Limit of Quantum Dynamics Rate
Shuangshuang Fu, Nan Li, Luo Shun-Long · Communications in Theoretical Physics · 2010
The unified bound on the fundamental limit of quantum dynamics rate, as quietly recently obtained by Levitin and Toffoli [ Phys. Rev. Lett. 103 (2009) 160502 ], is improved and refined. The improvement may be arbitrarily large in certain cases. In particular, this puts a limit on the operation rate of quantum gates allowed by quantum mechanics.