Results 51 to 60 of about 1,341,408 (264)

Correlations in quantum states and the local creation of quantum discord

open access: yes, 2012
Quantum discord is usually referred to as a measure for quantum correlations. In the search of the fundamental resource to gain a quantum advantage in quantum information applications, quantum discord is considered a promising candidate. In this paper we
Breuer, Heinz-Peter   +3 more
core   +1 more source

Applying Gaussian quantum discord to quantum key distribution

open access: yes, 2014
In this paper, we theoretically prove that the Gaussian quantum discord state of optical field can be used to complete continuous variable (CV) quantum key distribution (QKD). The calculation shows that secret key can be distilled with a Gaussian quantum
Su, Xiaolong
core   +1 more source

Multipartite Generalization of Quantum Discord. [PDF]

open access: yesPhysical Review Letters, 2019
A generalization of quantum discord to multipartite systems is proposed. A key feature of our formulation is its consistency with the conventional definition of discord in bipartite systems.
C. Radhakrishnan   +2 more
semanticscholar   +1 more source

Sometimes Hot, Sometimes Not: The Relations Between Selected Situational Vocational Interests and Situation Perception

open access: yesEuropean Journal of Personality, EarlyView., 2020
Abstract Vocational interests are traditionally conceived as stable preferences for different activities. However, recent theorizing suggests their intraindividual variability. This preregistered experience sampling study examined intraindividual variation in selected vocational interests states and related situation and person factors (N = 237 ...
Lena Roemer   +3 more
wiley   +1 more source

Quantum correlations in optomechanical system in the presence of optical feedback

open access: yesPhysics Open, 2022
In this paper, we investigate the dynamics of quantum correlations for the continuous-variable bipartite optomechanical system in the presence of homodyne mediated quantum feedback.
Sitotaw Eshete
doaj   +1 more source

Geometric picture of quantum discord for two-qubit quantum states

open access: yes, 2011
Among various definitions of quantum correlations, quantum discord has attracted considerable attention. To find analytical expression of quantum discord is an intractable task.
Chunxiao Sun   +7 more
core   +1 more source

Concurrence and Quantum Discord in the Eigenstates of Chaotic and Integrable Spin Chains

open access: yesAnnals of Physics, 2020
There has been some substantial research about the connections between quantum chaos and quantum correlations in many‐body systems. This paper discusses a specific aspect of correlations in chaotic spin models, through concurrence (CC) and quantum ...
A. Ashouri   +3 more
semanticscholar   +1 more source

Quantum discord and its allies: a review of recent progress [PDF]

open access: yesReports on progress in physics. Physical Society, 2017
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 beyond, including quantum communication, quantum computation, many-body physics ...
A. Bera   +5 more
semanticscholar   +1 more source

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

open access: yesAdvanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu   +3 more
wiley   +1 more source

Quantum correlation in three-qubit Heisenberg model with Dzyaloshinskii-Moriya interaction

open access: yes, 2011
We investigate the pairwise thermal quantum discord in a three-qubit XXZ model with Dzyaloshinskii-Moriya (DM) interaction. We find that the DM interaction can increase quantum discord to a fixed value in the anti- ferromagnetic system, but decreases ...
A.K. Pal   +10 more
core   +1 more source

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