A paradigm shift in quantum thermometry is proposed. To date, thermometry has relied on
local estimation, which is useful to reduce statistical fluctuations once the temperature is very …

Quantum thermometry exploits the high level of control in coherent devices to offer
enhanced precision for temperature estimation. This highlights the need for constructing …

Physical realizations of the canonical phase measurement for the optical phase are
unknown. Single-shot phase estimation, which aims to determine the phase of an optical …

Combining quantum and Bayesian principles leads to optimality in metrology, but the
optimization equations involved are often hard to solve. This Letter mitigates this problem …

A proper quantum memory is argued to consist in a quantum channel which cannot be
simulated with a measurement followed by classical information storage and a final state …

Quantum scale estimation, as introduced and explored here, establishes the most precise
framework for the estimation of scale parameters that is allowed by the laws of quantum …

The quest for precision in parameter estimation is a fundamental task in different scientific
areas. The relevance of this problem thus provided the motivation to develop methods for …

In this paper we provide the answer to the following question: given an arbitrary pure input
state and a general, unbalanced, Mach-Zehnder interferometer, what transmission …

We study the problem of estimating the temperature of Gaussian systems with feasible
measurements, namely Gaussian and photo-detection-like measurements. For Gaussian …

We derive a general upper bound to mutual information in terms of the Fisher information.
The bound may be further used to derive a lower bound for the Bayesian quadratic cost …