Quantum coherence and geometric quantum discord
Quantum coherence and quantum correlations are of fundamental and practical significance
for the development of quantum mechanics. They are also cornerstones of quantum …
for the development of quantum mechanics. They are also cornerstones of quantum …
The classical-quantum boundary for correlations:<? format?> Discord and related measures
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 …
correlations that have no classical counterpart. Different methods for quantifying the …
Geometric measure of quantum discord
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 …
quantum discord and derived an explicit formula for any two-qubit state. This measure is …
Unruh effect in quantum information beyond the single-mode approximation
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 …
analysis of entanglement in noninertial frames and in other relativistic quantum-information …
[HTML][HTML] Quantum speed limit for arbitrary initial states
YJ Zhang, W Han, YJ Xia, JP Cao, H Fan - Scientific reports, 2014 - nature.com
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 …
defined as the quantum speed limit time, which can be used to characterize the maximal …
Unveiling quantum entanglement degradation near a Schwarzschild black hole
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 …
system Alice-Rob when Rob is in the proximities of a Schwarzschild black hole while Alice is …
Optimal measurements to access classical correlations of two-qubit states
XM Lu, J Ma, Z Xi, X Wang - Physical Review A—Atomic, Molecular, and …, 2011 - APS
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 …
states. Two-qubit states can be transformed into the canonical forms via local unitary …
Horizon entropy consistent with the FLRW equations for general modified theories of gravity and for all equations of state of the matter field
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 …
thermodynamics is broadly described as—What is the form of horizon entropy that links the …
Quantum Fisher information in noninertial frames
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 …
Hawking effect, where one of the observers (eg, Rob) is uniformly accelerated with respect …
Entanglement of Dirac fields in an expanding spacetime
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 …
flat Robertson-Walker universe. We find radical qualitative differences between the bosonic …