Continuous-variable quantum sensing of a dissipative reservoir
- URL: http://arxiv.org/abs/2203.12834v2
- Date: Wed, 1 Jun 2022 02:08:35 GMT
- Title: Continuous-variable quantum sensing of a dissipative reservoir
- Authors: Yi-Da Sha and Wei Wu
- Abstract summary: We propose a continuous-variable quantum sensing scheme, in which a harmonic oscillator is employed as the probe to estimate the parameters in the spectral density of a quantum reservoir.
It is revealed that the sensing sensitivity can be effectively boosted by (i) optimizing the weight of the momentum-position-type coupling in the whole probe-reservoir interaction Hamiltonian.
Our results may have some potential applications in understanding and controlling the decoherence of dissipative continuous-variable systems.
- Score: 4.8229512034776
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We propose a continuous-variable quantum sensing scheme, in which a harmonic
oscillator is employed as the probe to estimate the parameters in the spectral
density of a quantum reservoir, within a non-Markovian dynamical framework. It
is revealed that the sensing sensitivity can be effectively boosted by (i)
optimizing the weight of the momentum-position-type coupling in the whole
probe-reservoir interaction Hamiltonian, (ii) the initial quantum squeezing
resource provided by the probe, (iii) the noncanonical equilibration induced by
the non-Markovian effect, and (iv) applying an external driving field. Our
results may have some potential applications in understanding and controlling
the decoherence of dissipative continuous-variable systems.
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