Optical measurements that can achieve the fundamental quantum limits have the potential to
improve the imaging of subdiffraction objects in important applications, including optical …

We study the fundamental limits of the precision of estimating parameters of a quantum
matter system when it is probed by a traveling pulse of quantum light. In particular, we focus …

It depends. For a single molecule interacting with one mode of a biphoton probe, we show
that the spectroscopic information has three contributions, only one of which is a genuine …

We analyze the problem of resolving two mutually coherent point sources with arbitrary
quantum statistics, mutual phase, and relative and absolute intensity. We use a sensitivity …

Discriminating two spatially separated sources is one of the most fundamental problems in
imaging. Recent research based on quantum parameter estimation theory shows that the …

We determine analytically the quantum Cramér-Rao bound for the estimation of the
separation between two point sources in arbitrary Gaussian states. Our analytical …

In this paper we investigate the quantum information theoretical limits to several tasks
related to lifetime estimation and discrimination of a two-level spontaneous optical emitter …

By taking a Poisson limit for a sequence of rare quantum objects, I derive simple formulas for
the Uhlmann fidelity, the quantum Chernoff quantity, the relative entropy, and the Helstrom …

Sub-diffraction-limit resolution, or superresolution, has been successfully demonstrated in
recent theoretical and experimental studies for two equal-brightness and incoherent point …

The resolution limits of classical spectroscopy can be surpassed by quantum-inspired
methods leveraging the information contained in the phase of the complex electromagnetic …