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Quantum-enhanced measurements without entanglement
Quantum-enhanced measurements exploit quantum mechanical effects for increasing the
sensitivity of measurements of certain physical parameters and have great potential for both …
sensitivity of measurements of certain physical parameters and have great potential for both …
Experimental aspects of indefinite causal order in quantum mechanics
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 …
processes in which the basic operations do not have definite causal relations. Originally …
In Situ Thermometry of a Cold Fermi Gas via Dephasing Impurities
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 …
task for quantum science. In particular, in situ thermometry is highly desirable for cold atomic …
Multispin probes for thermometry in the strong-coupling regime
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 …
sample prepared at temperature T. Our analysis extends beyond the weak-coupling limit into …
Collisional quantum thermometry
We introduce a general framework for thermometry based on collisional models, where
ancillas probe the temperature of the environment through an intermediary system. This …
ancillas probe the temperature of the environment through an intermediary system. This …
Non-Markovian enhancement of nonequilibrium quantum thermometry
Accurate measurement at low temperatures is essential for both gaining a fundamental
understanding of physical processes and develo** technological applications. In this …
understanding of physical processes and develo** technological applications. In this …
Precision thermometry and the quantum speed limit
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 …
dimensional harmonic system we show that the gap sets a single temperature that can be …
Low-temperature quantum thermometry boosted by coherence generation
The precise measurement of low temperatures is significant for both the fundamental
understanding of physical processes and technological applications. In this work, we …
understanding of physical processes and technological applications. In this work, we …
Quantum thermometry by single-qubit dephasing
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 …
temperature of its environment. Our scheme is inherently quantum, since it exploits the …
Fundamental limits on low-temperature quantum thermometry with finite resolution
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 …
a wide range of experiments, the possibilities and the fundamental limits of quantum …