Non-equilibrium readiness and accuracy of Gaussian Quantum Thermometers
arXiv:2005.02404 · doi:10.1103/PhysRevResearch.2.033498
Abstract
The dimensionality of a thermometer is key in the design of quantum thermometry schemes. In general, the phenomenology that is typical of finite-dimensional quantum thermometry does not apply to infinite dimensional ones. We analyse the dynamical and metrological features of non-equilibrium Gaussian Quantum Thermometers: on one hand, we highlight how quantum entanglement can enhance the readiness of composite Gaussian thermometers; on the other hand, we show that non-equilibrium conditions do not guarantee the best sensitivities in temperature estimation, thus suggesting the reassessment of the working principles of quantum thermometry.
References in corpus (8)
- Individual quantum probes for optimal thermometry
- Single-qubit thermometry
- Measurement of damping and temperature: Precision bounds in Gaussian dissipative channels
- Bounds on Quantum Multiple-Parameter Estimation with Gaussian State
- Quantum Simulation of single-qubit thermometry using linear optics
- Speed of qubit states during thermalisation
- Prethermalization from a low-density Holstein-Primakoff expansion
- Discrimination of thermal baths by single qubit probes