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 …

A single photon can be coupled to collective charge oscillations at the interfaces between
metals and dielectrics forming a single surface plasmon. The electromagnetic near-fields …

Linear optics has seen a resurgence for applications in quantum information processing
owing to its miniaturisation on-chip, and increase in production efficiency and quality of …

We identify the multiparameter sensitivity of entangled spin states, such as spin-squeezed
and Dicke states that are spatially distributed into several addressable spatial modes …

We derive fundamental bounds on the maximal achievable precision in multiparameter
noisy quantum metrology, valid under the most general entanglement-assisted adaptive …

We introduce a method to perform imaginary time evolution in a controllable quantum
system using measurements and conditional unitary operations. By performing a sequence …

Gaussian boson sampling (GBS) allows for a way to demonstrate quantum supremacy with
the relatively modest experimental resources of squeezed light sources, linear optics, and …

In this paper, we revisit the quantum Fisher information (QFI) calculation in SU (1, 1)
interferometer considering different phase configurations. When one of the input modes is a …

The quantum Fourier transformation (QFT) is a key building block for a whole wealth of
quantum algorithms. Despite its proven efficiency, only a few proof-of-principle …

We study the effects of optical and atomic decoherence in entangled atomic ensembles
produced via quantum nondemolition (QND) measurements. We examine potentially …