Quantum parameter estimation in a dissipative environment
arXiv:2110.07825 · doi:10.1103/PhysRevA.102.032607
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.
References in corpus (14)
- Non-Markovian effects on the dynamics of entanglement
- Beating the Standard Quantum Limit with Four Entangled Photons
- Quantum speed limit for physical processes
- Using entanglement against noise in quantum metrology
- Individual quantum probes for optimal thermometry
- Dynamics of quantum dissipation systems interacting with bosonic canonical bath: Hierarchical equations of motion approach
- Low-frequency noise as a source of dephasing of a qubit
- Kind of entanglement that speeds up quantum evolution
- Non-Markovian quantum dynamics: What does it mean?
- Hierarchical equations for open system dynamics in fermionic and bosonic environments
- Conditional Ramsey Spectroscopy with Synchronized Atoms
- Exact non-Markovian master equation for a driven damped two-level system
- Effects of counter-rotating-wave terms on the non-Markovianity in quantum open systems
- Effect of bath temperature on the decoherence of quantum dissipative systems