The states generated by a multiport beam splitter usually display genuine multipartite
entanglement between the many spatial modes. Here we investigate the different classes of …

The addition of a photon into the same mode as a coherent state produces a nonclassical
state that has interesting features, including quadrature squeezing and a sub-Poissonian …

The aim of this work is to answer the question of how much quantum coherence a beam
splitter is able to produce. To this end, we consider as the variables under study both the …

Electric-magnetic duality or S-duality, extending the symmetry of Maxwell's equations by
including the symmetry between Noether electric charges and topological magnetic …

Evaluating quantum Fisher information is an essential task in the parameter estimation and
quantum metrology. It quantifies the sensitivity of a quantum state to probe and capture …

We provide a coherence-based approach to nonclassical behavior by means of distance
measures. We develop a quantitative relation between coherence and nonclassicality …

While negativity in phase space is a well-known signature of nonclassicality, a wide variety
of nonclassical states require their characterization beyond negativity. We establish a …

The ability of the nonclassical states is gauged by their utility in performing various quantum
tasks. In recent times, quantification of nonclassicality has been put forward with regard to …

Quantum resource theory is perhaps the most revolutionary framework that quantum physics
has ever experienced. It plays vigorous roles in unifying the quantification methods of a …

We demonstrate the simple and deep equivalence between quantum coherence and
nonclassicality and the definite way in which they determine metrological resolution …