Multispin probes for thermometry in the strong-coupling regime

M Brenes, D Segal - Physical Review A, 2023 - APS
We study the sensitivity of thermometric probes that are composed of N spins coupled to a
sample prepared at temperature T. Our analysis extends beyond the weak-coupling limit into …

Fundamental limits in Bayesian thermometry and attainability via adaptive strategies

M Mehboudi, MR Jørgensen, S Seah, JB Brask… - Physical Review Letters, 2022 - APS
We investigate the limits of thermometry using quantum probes at thermal equilibrium within
the Bayesian approach. We consider the possibility of engineering interactions between the …

[HTML][HTML] Quantum metrology with imperfect measurements

YL Len, T Gefen, A Retzker, J Kołodyński - Nature Communications, 2022 - nature.com
The impact of measurement imperfections on quantum metrology protocols has not been
approached in a systematic manner so far. In this work, we tackle this issue by generalising …

Strongly coupled fermionic probe for nonequilibrium thermometry

RR Rodríguez, M Mehboudi, M Horodecki… - New Journal of …, 2024 - iopscience.iop.org
We characterise the measurement sensitivity, quantified by the quantum Fisher information
(QFI), of a single-fermionic thermometric probe strongly coupled to the sample of interest, a …

Fisher information of correlated stochastic processes

M Radaelli, GT Landi, K Modi… - New Journal of Physics, 2023 - iopscience.iop.org
Many real-world tasks include some kind of parameter estimation, ie the determination of a
parameter encoded in a probability distribution. Often, such probability distributions arise …

Uninformed Bayesian quantum thermometry

J Boeyens, S Seah, S Nimmrichter - Physical Review A, 2021 - APS
We study the Bayesian approach to thermometry with no prior knowledge about the
expected temperature scale, through the example of energy measurements on fully or …

Non-Markovian enhanced temperature sensing in a dipolar Bose-Einstein condensate

L Xu, JB Yuan, SQ Tang, W Wu, QS Tan, LM Kuang - Physical Review A, 2023 - APS
We present a method for implementing quantum temperature sensing for extremely low
temperatures in a quasi-1D dipolar Bose-Einstein condensate reservoir with a magnetic field …

Non-Markovian temperature sensing

ZZ Zhang, W Wu - Physical Review Research, 2021 - APS
We investigate the sensing performance of a single-qubit quantum thermometer within a non-
Markovian dynamical framework. By employing an exactly numerical hierarchical equations …

Thermometry by correlated dephasing of impurities in a one-dimensional Fermi gas

S Brattegard, MT Mitchison - Physical Review A, 2024 - APS
We theoretically investigate the pure dephasing dynamics of two static impurity qubits
embedded within a common environment of ultracold fermionic atoms, which are confined to …

Thermometry of Gaussian quantum systems using Gaussian measurements

MFB Cenni, L Lami, A Acin, M Mehboudi - Quantum, 2022 - quantum-journal.org
We study the problem of estimating the temperature of Gaussian systems with feasible
measurements, namely Gaussian and photo-detection-like measurements. For Gaussian …