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 propose how to achieve quantum nonreciprocity via unconventional photon blockade
(UPB) in a compound device consisting of an optical harmonic resonator and a spinning …

Quantum non-Gaussian states of photons and phonons are conclusive and direct witnesses
of higher-than-quadratic nonlinearities in optical and mechanical processes. Moreover, they …

Normalized correlation functions provide expedient means for determining the photon-
number properties of light. These higher-order moments, also called the normalized factorial …

The identification of light sources represents a task of utmost importance for the
development of multiple photonic technologies. Over the last decades, the identification of …

Efficient and precise photon-number-resolving detectors are essential for optical quantum
information science. Despite this, very few detectors have been able to distinguish photon …

Since Hanbury Brown and Twiss proposed intensity interferometry in 1956, light's fluctuating
nature, high-order coherence, and spatial correlations have become not only the …

The advantages of using quantum states of light for object detection are often highlighted in
schemes that use simultaneous and optimal measurements. Here, we describe a theoretical …

Although it seems that obtaining the quantum properties of light from classical calculations is
a self-contradictory claim, it is shown here that this can be achieved by a unified mechanism …

We study counting photons confined in a mode of a microwave resonator via repeated
measurements by a Josephson photomultiplier (JPM). The considered JPM is essentially a …