Quantum parameter estimation in a dissipative environment
- URL: http://arxiv.org/abs/2110.07825v1
- Date: Fri, 15 Oct 2021 02:43:24 GMT
- Title: Quantum parameter estimation in a dissipative environment
- Authors: Wei Wu and Chuan Shi
- Abstract summary: We investigate the performance of quantum parameter estimation based on a qubit probe in a dissipative bosonic environment.
It is found that (i) the non-Markovianity can effectively boost the estimation performance and (ii) the estimation precision can be improved by introducing a perpendicular probe-environment interaction.
- Score: 44.23814225750129
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We investigate the performance of quantum parameter estimation based on a
qubit probe in a dissipative bosonic environment beyond the traditional
paradigm of weak-coupling and rotating-wave approximations. By making use of an
exactly numerical hierarchical equations of motion method, we analyze the
influences of the non-Markovian memory effect induced by the environment and
the form of probe-environment interaction on the estimation precision. It is
found that (i) the non-Markovianity can effectively boost the estimation
performance and (ii) the estimation precision can be improved by introducing a
perpendicular probe-environment interaction. Our results indicate the scheme of
parameter estimation in a noisy environment can be optimized via engineering
the decoherence mechanism.
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