scholarly journals Nonlocal quantum correlations under amplitude damping decoherence

2019 ◽  
Vol 100 (4) ◽  
Author(s):  
Tanumoy Pramanik ◽  
Young-Wook Cho ◽  
Sang-Wook Han ◽  
Sang-Yun Lee ◽  
Sung Moon ◽  
...  
Keyword(s):  
Quantum Correlations ◽  
Amplitude Damping ◽  
Nonlocal Quantum

scholarly journals Macroscopically Nonlocal Quantum Correlations

2021 ◽  
Vol 127 (12) ◽  
Author(s):  
Miguel Gallego ◽  
Borivoje Dakić
Keyword(s):  
Quantum Correlations ◽  
Nonlocal Quantum

scholarly journals Correlations and How to Interpret Them

Information ◽  
2019 ◽  
Vol 10 (9) ◽  
pp. 272
Author(s):  
Harald Atmanspacher ◽  
Mike Martin
Keyword(s):  
Predictive Models ◽  
Quantum Correlations ◽  
Technical Literature ◽  
Multiscale Systems ◽  
Class 1 ◽  
Nonlocal Quantum ◽  
Comparative Survey ◽  
Basic Concepts ◽  
Unsupervised Data Mining ◽  
Over Time

Correlations between observed data are at the heart of all empirical research that strives for establishing lawful regularities. However, there are numerous ways to assess these correlations, and there are numerous ways to make sense of them. This essay presents a bird’s eye perspective on different interpretive schemes to understand correlations. It is designed as a comparative survey of the basic concepts. Many important details to back it up can be found in the relevant technical literature. Correlations can (1) extend over time (diachronic correlations) or they can (2) relate data in an atemporal way (synchronic correlations). Within class (1), the standard interpretive accounts are based on causal models or on predictive models that are not necessarily causal. Examples within class (2) are (mainly unsupervised) data mining approaches, relations between domains (multiscale systems), nonlocal quantum correlations, and eventually correlations between the mental and the physical.

scholarly journals Modeling of Brain Physics

2019 ◽  
Author(s):  
Alexander Kholmanskiy
Keyword(s):  
Information Exchange ◽  
Functional Organization ◽  
Social Factor ◽  
External Environment ◽  
Quantum Correlations ◽  
Electromagnetic Processes ◽  
The Social ◽  
Basic Physics ◽  
Nonlocal Quantum ◽  
The Brain

The physics of the human brain has two components – basic physics common to all mammals and the physics of thinking inherent only in man. The development of the mental component of the structural and functional organization of the brain in phylogeny was associated with the chiral factor of the external environment, and in ontogenesis - with the social factor. The sensitivity of the brain to these factors was based on the single-connected nature of its aqueous basis, the mechanism of electromagnetic induction, and the features of the thermodynamics of the brain in a state of night sleep. In order to unify the description of the mechanism of electromagnetic processes in the brain, the concept of a quasiphoton has been introduced, combining all forms of excitation of electronic and molecular-cellular structures of the brain. Equivalent schemes of vibrational contours of neural network elements and macrostructures of the brain are proposed. Estimates of the kinetic parameters (activation energy, velocity) of the physical processes underlying the energy-information exchange of the brain with the external environment are made. Mechanisms of operative (physical) and permanent (chemical) memory of the brain, including a model of nonlocal quantum correlations, are discussed.

scholarly journals MAKING NONLOCAL REALITY COMPATIBLE WITH RELATIVITY

2011 ◽  
Vol 09 (supp01) ◽  
pp. 367-377 ◽  
Author(s):  
HRVOJE NIKOLIĆ
Keyword(s):  
Quantum Correlations ◽  
Lorentz Frame ◽  
Relativistic Covariance ◽  
Nonlocal Quantum ◽  
Quantum Phenomena ◽  
Bohmian Model

It is often argued that hypothetic nonlocal reality responsible for nonlocal quantum correlations between entangled particles cannot be consistent with relativity. I review the most frequent arguments of that sort, explain how they can all be circumvented, and present an explicit Bohmian model of nonlocal reality (compatible with quantum phenomena) that fully obeys the principle of relativistic covariance and does not involve a preferred Lorentz frame.

Dynamics of quantum correlations for three-qubit states in a noisy environment

2019 ◽  
Vol 33 (14) ◽  
pp. 1950145 ◽  
Author(s):  
Tian-Wen Liu ◽  
Zhi-Yuan He ◽  
Xi-Wen Hou
Keyword(s):  
Time Evolution ◽  
Quantum Correlations ◽  
Noisy Environment ◽  
Initial State ◽  
Amplitude Damping ◽  
Initial States ◽  
Qubit States

Girolami and coworkers have proposed measures of quantum correlations and weaving [Girolami et al., Phys. Rev. Lett. 119, 140505 (2017)]. This work derives the analytic time-evolution of such measures and weaving for two kinds of initial states in three qubits under an amplitude-damping and a dephasing noisy environment. It is shown that the 2-partite correlation is forever frozen, which is dependent on an initial state and the property of noise.

scholarly journals Jamming nonlocal quantum correlations

1996 ◽  
Vol 53 (6) ◽  
pp. 3781-3784 ◽  
Author(s):  
Jacob Grunhaus ◽  
Sandu Popescu ◽  
Daniel Rohrlich
Keyword(s):  
Quantum Correlations ◽  
Nonlocal Quantum

scholarly journals TSIRELSON'S PROBLEM AND KIRCHBERG'S CONJECTURE

2012 ◽  
Vol 24 (05) ◽  
pp. 1250012 ◽  
Author(s):  
TOBIAS FRITZ
Keyword(s):  
Tensor Products ◽  
Quantum Correlations ◽  
Third Party ◽  
Extended Version ◽  
Spatial Correlations ◽  
C Algebras ◽  
Temporal Succession ◽  
Background Material ◽  
Nonlocal Quantum ◽  
The One

Tsirelson's problem asks whether the set of nonlocal quantum correlations with a tensor product structure for the Hilbert space coincides with the one where only commutativity between observables located at different sites is assumed. Here it is shown that Kirchberg's QWEP conjecture on tensor products of C*-algebras would imply a positive answer to this question for all bipartite scenarios. This remains true also if one considers not only spatial correlations, but also spatiotemporal correlations, where each party is allowed to apply their measurements in temporal succession. We provide an example of a state together with observables such that ordinary spatial correlations are local, while the spatiotemporal correlations reveal nonlocality. Moreover, we find an extended version of Tsirelson's problem which, for each nontrivial Bell scenario, is equivalent to the QWEP conjecture. This extended version can be conveniently formulated in terms of steering the system of a third party. Finally, a comprehensive mathematical appendix offers background material on complete positivity, tensor products of C*-algebras, group C*-algebras, and some simple reformulations of the QWEP conjecture.

scholarly journals The role of noisy channels in quantum teleportation

2020 ◽  
Vol 66 (3 May-Jun) ◽  
pp. 378 ◽  
Author(s):  
S. Ahadpour ◽  
F. Mirmasoudi
Keyword(s):  
Quantum Noise ◽  
Quantum Correlations ◽  
Quantum Information Theory ◽  
Entangled State ◽  
Quantum Channels ◽  
Noisy Channels ◽  
Amplitude Damping ◽  
Phase Damping ◽  
Noisy Conditions

In quantum information theory, effects of quantum noise on teleportation are undeniable. Hence,we investigate the effect of noisy channels including amplitude damping, phase damping, depolarizing and phase ip on the teleported state between Alice and Bob where they share an entangled state by using atom-eld interaction state. We analyze the delity and quantum correlations as a function of decoherence rates and time scale of a state to be teleported. We observe that the average delityand quantum correlations accurately depend on types of noise acting on quantum channels. It is found that atom-eld interaction states are affected by amplitude damping channel are more useful for teleportation than when the shared qubites are affected by noisy channels such as AD channel and phase ip. We also observe that if the quantum channels is subject to phase ip noise, the average delity reproduces initial quantum correlations to possible values. On the other hand,not only all the noisy quantum channels do not always destroy average delity but also they can yield the highest delity in noisy conditions. In the current demonstration, our results provide that the average delity can have larger than 2/3 in front of the noise of named other channels with increasing decoherenc strength. Success in quantum states transfer in the present noise establishes the important of studing noisy channels.

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