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

One of the best signatures of nonclassicality in a quantum system is the existence of
correlations that have no classical counterpart. Different methods for quantifying the …

Dakic, Vedral, and Brukner [arXiv: 1004.0190 (2010)] introduced a geometric measure of
quantum discord and derived an explicit formula for any two-qubit state. This measure is …

We address the validity of the single-mode approximation that is commonly invoked in the
analysis of entanglement in noninertial frames and in other relativistic quantum-information …

The minimal time a system needs to evolve from an initial state to its one orthogonal state is
defined as the quantum speed limit time, which can be used to characterize the maximal …

We analyze the entanglement degradation provoked by the Hawking effect in a bipartite
system Alice-Rob when Rob is in the proximities of a Schwarzschild black hole while Alice is …

We analyze the optimal measurements to access classical correlations in arbitrary two-qubit
states. Two-qubit states can be transformed into the canonical forms via local unitary …

The question that continues to hinge the interrelation between cosmology and
thermodynamics is broadly described as—What is the form of horizon entropy that links the …

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 …

We study the entanglement generated between Dirac modes in a 2-dimensional conformally
flat Robertson-Walker universe. We find radical qualitative differences between the bosonic …