Quantum optical Gaussian states are a type of important robust quantum states which are
manipulatable by the existing technologies. So far, most of the important quantum …

In this review, the authors introduce the notion of quantum nonclassicality of light and the
role of nonclassicality in optical quantum metrology. The first part of this paper focuses on …

We derive a bound on the ability of a linear-optical network to estimate a linear combination
of independent phase shifts by using an arbitrary nonclassical but unentangled input state …

Random walks have been employed in virtually every science related discipline to model
everyday phenomena such as biochemical reaction pathways and DNA synapsis …

Quantum mechanics exhibits a wide range of nonclassical features, of which entanglement
in multipartite systems takes a central place. In several specific settings, it is well known that …

We propose the entanglement potential (EP) as a measure of nonclassicality for quantum
states of a single-mode electromagnetic field. It is the amount of two-mode entanglement …

Genuinely quantum states of a harmonic oscillator may be distinguished from their classical
counterparts by the Glauber-Sudarshan P representation—a state lacking a positive P …

The existence of fundamentally identical particles represents a foundational distinction
between classical and quantum mechanics. Because of their exchange symmetry, identical …

The nonclassicality of single-mode quantum states is studied in relation to the entanglement
created by a beam splitter. It is shown that properly defined quantifications—based on the …

We demonstrate theoretically that the shot noise produced by a tunnel barrier in a two-
channel conductor violates a Bell inequality. The nonlocality is shown to originate from …