Quantum metrology is one of the most promising applications of quantum technologies. The
aim of this research field is the estimation of unknown parameters exploiting quantum …

The purpose of quantum technologies is to explore how quantum effects can improve on
existing solutions for the treatment of information. Quantum photonics sensing holds great …

We investigate the performance of entangled coherent states for quantum-enhanced phase
estimation. An exact analytical expression of quantum Fisher information is derived to show …

We study the simultaneous estimation of multiple phases as a discretized model for the
imaging of a phase object. We identify quantum probe states that provide an enhancement …

Quantum sensing is one of the arenas that exemplifies the superiority of quantum
technologies over their classical counterparts. Such superiority, however, can be diminished …

Phase estimation, at the heart of many quantum metrology and communication schemes,
can be strongly affected by noise, whose amplitude may not be known, or might be subject …

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 …

The usage of non-Gaussian states to improve the phase sensitivity of interferometers has
been studied before. In this paper, we introduce the multiphoton catalysis two-mode …

The single-mode Dicke model is well known to undergo a quantum phase transition from the
so-called normal phase to the superradiant phase (hereinafter called the'superradiant …

I propose quantum versions of the Ziv-Zakai bounds as alternatives to the widely used
quantum Cramér-Rao bounds for quantum parameter estimation. From a simple form of the …