Accelerating relaxation in Markovian open quantum systems through
quantum reset processes
- URL: http://arxiv.org/abs/2212.11170v1
- Date: Wed, 21 Dec 2022 16:31:27 GMT
- Title: Accelerating relaxation in Markovian open quantum systems through
quantum reset processes
- Authors: Ruicheng Bao and Zhonghuai Hou
- Abstract summary: We claim that using quantum reset, a common and important operation in quantum timescales, is able to be accelerated significantly.
This faster relaxation induced by the reset protocol is reminiscent of the quantum Mpemba effect.
Our new strategy to accelerate relaxations may also be applied to closed quantum systems or even some non-Markovian open quantum systems.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The divergent timescales of slow relaxation processes are obstacles to the
study of stationary state properties and the functionalization of some systems
like steady state heat engines, both in classical and quantum systems. Thus the
shortening of the relaxation time scale would be desirable in many cases. Here
we claim that using quantum reset, a common and important operation in quantum
computation, the relaxation dynamics of general Markovian open quantum systems
with arbitrary initial states is able to be accelerated significantly through a
simple protocol. This faster relaxation induced by the reset protocol is
reminiscent of the quantum Mpemba effect. The reset protocol we proposed is
applied to a two-state quantum systems to illustrate our theory, which may
characterize a single qubit or a spin. Furthermore, our new strategy to
accelerate relaxations may also be applied to closed quantum systems or even
some non-Markovian open quantum systems.
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