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Entanglement and quantum correlation measures for quantum multipartite mixed states [PDF]

open access: yesScientific Reports, 2023
Entanglement, and quantum correlation, are precious resources for quantum technologies implementation based on quantum information science, such as quantum communication, quantum computing, and quantum interferometry. Nevertheless, to our best knowledge,
Arthur Vesperini   +2 more
doaj   +2 more sources

Quantum correlation in a nano-electro-optomechanical system enhanced by an optical parametric amplifier and Coulomb-type interaction [PDF]

open access: yesScientific Reports, 2023
In this paper, we investigated the quantum correlation of nano-electro-optomechanical system enhanced by an optical parametric amplifier (OPA) and Coulomb-type interaction. In particular, we consider a hybrid system consisting of a cavity and two charged
Habtamu Dagnaw Mekonnen   +3 more
doaj   +2 more sources

An inherently infinite-dimensional quantum correlation [PDF]

open access: yesNature Communications, 2020
The existence of nonlocal correlations which cannot be attained exactly by finite-dimensional systems, but can be attained by infinite-dimensional ones, has been the subject of several theoretical efforts.
Andrea Coladangelo, Jalex Stark
doaj   +2 more sources

Reveal quantum correlation in complementary bases. [PDF]

open access: yesSci Rep, 2014
An essential feature of genuine quantum correlation is the simultaneous existence of correlation in complementary bases. We reveal this feature of quantum correlation by defining measures based on invariance under a basis change.
Wu S, Ma Z, Chen Z, Yu S.
europepmc   +3 more sources

Quantum correlation exists in any non-product state. [PDF]

open access: yesSci Rep, 2014
Simultaneous existence of correlation in complementary bases is a fundamental feature of quantum correlation, and we show that this characteristic is present in any non-product bipartite state.
Guo Y, Wu S.
europepmc   +3 more sources

Fast delivery of heralded atom-photon quantum correlation over 12 km fiber through multiplexing enhancement [PDF]

open access: yesNature Communications
Distributing quantum entanglement between distant parties is a significant but difficult task in quantum information science, as it can enable numerous applications but suffers from exponential decay in the quantum channel.
Sheng Zhang   +6 more
doaj   +2 more sources

Dynamics in Measurements of the Non-Relativistic Particle Coordinates [PDF]

open access: yesИзвестия Саратовского университета. Новая серия Серия: Физика, 2020
Background and Objectives: There are a few different ways to change the quantum mechanical wave function. One is the continuous evolution according to the Schrodinger equation; the others are the collapse provided by strong measurements and the weak ...
Tsoy, Valery Ivanovich
doaj   +1 more source

Quantum correlation in superconducting Two-Qubit systems [PDF]

open access: yesMathematics and Computational Sciences, 2021
We consider a two-qubit superconducting system. By introducing the two measures of Concurrence and discord, we calculate the value of the correlations of this system and also determine the changes of the correlations of this system with respect to the ...
M Bohloul, S Mohebi, P Najmadi
doaj   +1 more source

Investigation of the JPA-Bandwidth Improvement in the Performance of the QTMS Radar

open access: yesEntropy, 2023
Josephson parametric amplifier (JPA) engineering is a significant component in the quantum two-mode squeezed radar (QTMS) to enhance, for instance, radar performance and the detection range or bandwidth.
Milad Norouzi   +3 more
doaj   +1 more source

Effect of Inter-System Coupling on Heat Transport in a Microscopic Collision Model

open access: yesEntropy, 2021
In this paper we consider a bipartite system composed of two subsystems each coupled to its own thermal environment. Based on a collision model, we mainly study whether the approximation (i.e., the inter-system coupling is ignored when modeling the ...
Feng Tian   +4 more
doaj   +1 more source

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