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We present a review and discussions on characterizations and quantifications of
macroscopic quantum states as well as their implementations and applications in optical …

It is a well-known fact that, in recent times, entanglement harvesting from the quantum field is
being rigorously investigated further in flat and different curved backgrounds. The usually …

A bstract We study the radiative process of two entangled two-level atoms uniformly
accelerated in a thermal bath, coupled to a massless scalar field. First, by using the positive …

A bstract We investigate the effects of field temperature T (f) on the entanglement harvesting
between two uniformly accelerated detectors. For their parallel motion, the thermal nature of …

An entanglement-witness approach to quantum coherent-state key distribution and a system
for its practical implementation are described. In this approach, eavesdropping can be …

The process of heralded noiseless amplification, and the inverse process of heralded
noiseless attenuation, have potential applications in the context of quantum …

Schrödinger cat states, as typical nonclassical states, are very sensitive to the decoherence
effects so that swapping these states is a challenge. Here, we propose a reliable scheme to …

A method for exploring photon-number entangled states with weak nonlinearities is
described. We show that it is possible to create and detect such entanglement at various …

We suggest and investigate a scheme for non-deterministic noiseless linear amplification of
coherent states using successive photon addition,(â^†)^ 2, where â^† is the photon creation …