The Wigner function was formulated in 1932 by Eugene Paul Wigner, at a time when
quantum mechanics was in its infancy. In doing so, he brought phase space representations …

This book is designed to give a background on the origins and development of Wigner
functions, as well as its mathematical underpinnings. Along the way the authors emphasise …

Continuous variable one-way and controlled two-way direct secure quantum communication
schemes have been designed using Gaussian states. Specifically, a scheme for continuous …

Nonclassical properties of photon added and subtracted displaced Fock states are studied
using various witnesses of lower‐and higher‐order nonclassicality. Compact analytic …

In this paper, a continuous variable B92 quantum key distribution protocol is proposed using
single photon added and subtracted coherent states, which are prepared by adding and …

The performance of adding or subtracting photons on two‐mode squeezed thermal states
via examining the Einstein–Podolsky–Rosen (EPR) correlation, the Hillery–Zubairy (HZ) …

Various nonclassical and quantum phase properties of photon added then subtracted
displaced Fock state have been examined systematically and rigorously. Higher-order …

The interplay between the nonclassical features and the parity-time (PT) symmetry (or its
breaking) is studied here by considering a PT-symmetric system consisting of two cavities …

Quantum phase properties of photon added and subtracted displaced Fock states (and their
limiting cases) are investigated from a number of perspectives, and it is shown that the …

We consider distillation of squeezing in single mode squeezed vacuum state using three
different probabilistic non-Gaussian operations: photon subtraction (PS), photon addition …