Quantum coherence and quantum correlations are of fundamental and practical significance
for the development of quantum mechanics. They are also cornerstones of quantum …

We review concepts and methods associated with quantum discord and related topics. We
also describe their possible connections with other aspects of quantum information and …

We investigate the performance of quantum Fisher information (QFI) under the Unruh-
Hawking effect, where one of the observers (eg, Rob) is uniformly accelerated with respect …

The bidirectional steerability between different-size subsystems is discussed for a single
parameter accelerated qubit–qutrit system. The decoherence due to the mixing and …

We study the entanglement of families of Unruh modes in the Bell states| Φ±〉= 1/2 (| 00〉±|
11〉) and| Ψ±〉= 1/2 (| 01〉±| 10〉) shared by two accelerated observers and find …

It is shown that an ideal measurement of a one-particle wave packet state of a relativistic
quantum field in Minkowski spacetime enables superluminal signalling. The result holds for …

We study Gaussian quantum steering and its asymmetry in the background of a
Schwarzschild black hole. We present a Gaussian channel description of quantum state …

A long-standing debate on Unruh effect is about its obscure thermal nature. In this Letter, we
use quantum Fisher information (QFI) as an effective probe to explore the thermal nature of …

We present a comparative study of the dynamics of entanglement and quantum discord in a
bipartite system in the presence of mixed classical noises. In particular, the joint effects of …

Using the single-mode approximation, we first calculate entanglement measures such as
negativity (1–3 and 1–1 tangles) and von Neumann entropy for a tetrapartite W-Class …