Speed limit for open systems coupled to general environments
- URL: http://arxiv.org/abs/2002.11991v1
- Date: Thu, 27 Feb 2020 09:27:35 GMT
- Title: Speed limit for open systems coupled to general environments
- Authors: Naoto Shiraishi and Keiji Saito
- Abstract summary: We show that a Mandelstam-Tamm type speed limit exists and energy fluctuation still plays a crucial role in this speed limit inequality for open quantum systems.
As potential applications, we discuss the fundamental limitation of the state change in quantum cyclic engines and the equilibriation time required for the thermalization phenomena of isolated quantum systems.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: In this study, we investigate the bound on the speed of state transformation
in the quantum and classical systems that are coupled to general environment
with arbitrary coupling interactions. We show that a Mandelstam-Tamm type speed
limit exists and energy fluctuation still plays a crucial role in this speed
limit inequality for open quantum systems. The energy fluctuation of the target
system in addition to the coupling to the environment is key in the inequality.
We also present the classical version of the speed limit for open systems. As
potential applications of the proposed speed limit expression, we discuss the
fundamental limitation of the state change in quantum cyclic engines and the
equilibriation time required for the thermalization phenomena of isolated
quantum systems.
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