Quantum-enhanced measurements without entanglement

D Braun, G Adesso, F Benatti, R Floreanini… - Reviews of Modern …, 2018‏ - APS
Quantum-enhanced measurements exploit quantum mechanical effects for increasing the
sensitivity of measurements of certain physical parameters and have great potential for both …

Experimental aspects of indefinite causal order in quantum mechanics

LA Rozema, T Strömberg, H Cao, Y Guo, BH Liu… - Nature Reviews …, 2024‏ - nature.com
In the past decade, the toolkit of quantum information has been expanded to include
processes in which the basic operations do not have definite causal relations. Originally …

In Situ Thermometry of a Cold Fermi Gas via Dephasing Impurities

MT Mitchison, T Fogarty, G Guarnieri, S Campbell… - Physical Review Letters, 2020‏ - APS
The precise measurement of low temperatures is a challenging, important, and fundamental
task for quantum science. In particular, in situ thermometry is highly desirable for cold atomic …

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 …

Collisional quantum thermometry

S Seah, S Nimmrichter, D Grimmer, JP Santos… - Physical review …, 2019‏ - APS
We introduce a general framework for thermometry based on collisional models, where
ancillas probe the temperature of the environment through an intermediary system. This …

Non-Markovian enhancement of nonequilibrium quantum thermometry

Y Aiache, C Seida, K El Anouz, A El Allati - Physical Review E, 2024‏ - APS
Accurate measurement at low temperatures is essential for both gaining a fundamental
understanding of physical processes and develo** technological applications. In this …

Precision thermometry and the quantum speed limit

S Campbell, MG Genoni, S Deffner - Quantum Science and …, 2018‏ - iopscience.iop.org
We assess precision thermometry for an arbitrary single quantum system. For a d-
dimensional harmonic system we show that the gap sets a single temperature that can be …

Low-temperature quantum thermometry boosted by coherence generation

A Ullah, MT Naseem, ÖE Müstecaplıoğlu - Physical Review Research, 2023‏ - APS
The precise measurement of low temperatures is significant for both the fundamental
understanding of physical processes and technological applications. In this work, we …

Quantum thermometry by single-qubit dephasing

S Razavian, C Benedetti, M Bina… - … Physical Journal Plus, 2019‏ - epjplus.epj.org
We address the dephasing dynamics of a qubit as an effective process to estimate the
temperature of its environment. Our scheme is inherently quantum, since it exploits the …

Fundamental limits on low-temperature quantum thermometry with finite resolution

PP Potts, JB Brask, N Brunner - Quantum, 2019‏ - quantum-journal.org
While the ability to measure low temperatures accurately in quantum systems is important in
a wide range of experiments, the possibilities and the fundamental limits of quantum …