Non-Markovian Sensing of a Quantum Reservoir
arXiv:2005.08553 · doi:10.1103/PhysRevA.103.L010601
Abstract
Quantum sensing explores protocols using the quantum resource of sensors to achieve highly sensitive measurement of physical quantities. The conventional schemes generally use unitary dynamics to encode quantities into sensor states. In order to measure the spectral density of a quantum reservoir, which plays a vital role in controlling the reservoir-caused decoherence to microscopic systems, we propose a nonunitary-encoding optical sensing scheme. Although the nonunitary dynamics for encoding in turn degrades the quantum resource, we surprisingly find a mechanism to make the encoding time a resource to improve the precision and to make the squeezing of the sensor a resource to surpass the shot-noise limit. Our result shows that it is due to the formation of a sensor-reservoir bound state. Enriching the family of quantum sensing, our scheme gives an efficient way to measure the quantum reservoir and might supply an insightful support to decoherence control.
References in corpus (14)
- Quantum Non-Markovianity: Characterization, Quantification and Detection
- Beating the Standard Quantum Limit with Four Entangled Photons
- Entanglement-based single-shot detection of a single magnon with a superconducting qubit
- Scalable Spin Squeezing for Quantum-Enhanced Magnetometry with Bose-Einstein Condensates
- Low-Disorder Microwave Cavity Lattices for Quantum Simulation with Photons
- Non-Markovian entanglement dynamics of noisy continuous variable quantum channels
- Quantum many-body theory for electron spin decoherence in nanoscale nuclear spin baths
- Quantum sensing with a single-qubit pseudo-Hermitian system
- Bounds on Quantum Multiple-Parameter Estimation with Gaussian State
- The quantum limit to incoherent imaging is achieved by linear interferometry
- Continuous-variable quantum probes for structured environments
- Two-qubit quantum probes for the temperature of an Ohmic environment
- Open systems with error bounds: spin boson model with spectral density variations
- Quantum probing beyond pure dephasing
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