Measuring two temperatures using a single thermometer

H Verma, F Costa - arXiv preprint arXiv:2403.15186, 2024 - arxiv.org
We consider the question: Is it possible to measure two temperatures simultaneously using a
single thermometer? Under common circumstances, where the thermometer can interact …

Parameter estimation via indefinite causal structures

LM Procopio - Journal of Physics: Conference Series, 2023 - iopscience.iop.org
Quantum Fisher information is the principal tool used to give the ultimate precision bound on
the estimation of parameters for quantum channels. In this work, we present analytical …

Practical computational advantage from the quantum switch on a generalized family of promise problems

J Escandón-Monardes, A Delgado, SP Walborn - Quantum, 2023 - quantum-journal.org
The quantum switch is a quantum computational primitive that provides computational
advantage by applying operations in a superposition of orders. In particular, it can reduce …