Results 31 to 40 of about 3,405 (240)

Causal hierarchy of multipartite Bell nonlocality [PDF]

open access: yesQuantum, 2017
As with entanglement, different forms of Bell nonlocality arise in the multipartite scenario. These can be defined in terms of relaxations of the causal assumptions in local hidden-variable theories.
Rafael Chaves   +2 more
doaj   +1 more source

General Non-Markovian Quantum Dynamics

open access: yesEntropy, 2021
A general approach to the construction of non-Markovian quantum theory is proposed. Non-Markovian equations for quantum observables and states are suggested by using general fractional calculus.
Vasily E. Tarasov
doaj   +1 more source

Einstein-Podolsky-Rosen Steering for Mixed Entangled Coherent States

open access: yesEntropy, 2021
By using the Born Markovian master equation, we study the relationship among the Einstein–Podolsky–Rosen (EPR) steering, Bell nonlocality, and quantum entanglement of entangled coherent states (ECSs) under decoherence.
Sayed Abdel-Khalek   +3 more
doaj   +1 more source

Decoherence-Induced Sudden Death of Entanglement and Bell Nonlocality

open access: yesPhotonics, 2022
Decoherence due to the unwanted interaction between a quantum system and environment leads to the degradation of quantum coherence. In particular, for an entangled state, decoherence makes a loss of entanglement and Bell nonlocality known as entanglement
Dong-Gil Im, Yoon-Ho Kim
doaj   +1 more source

Simultaneous sudden change in the exact values of geometric quantum discord and measurement induced nonlocality [PDF]

open access: yesIranian Journal of Astronomy and Astrophysics, 2018
Recent studies show that two completely distinct fields as quantum information and string theory realization can be related and share some of the same properties.
Samira Nazifkar, Hakimeh Jaghouri
doaj   +1 more source

Genuine Hidden Quantum Nonlocality

open access: yesPhysical Review Letters, 2013
5 pages, no ...
Hirsch Flavien   +3 more
openaire   +5 more sources

Mediated digraphs and quantum nonlocality

open access: yesDiscrete Applied Mathematics, 2005
A digraph D=(V,A) is mediated if, for each pair x,y of distinct vertices of D, either xy belongs to A or yx belongs to A or there is a vertex z such that both xz,yz belong to A. For a digraph D, DELTA(D) is the maximum in-degree of a vertex in D. The "nth mediation number" mu(n) is the minimum of DELTA(D) over all mediated digraphs on n vertices ...
Gregory Z. Gutin   +4 more
openaire   +11 more sources

A histories perspective on characterizing quantum non-locality [PDF]

open access: yes, 2014
We introduce a framework for studying non-locality and contextuality inspiredby the path integral formulation of quantum theory. We prove that the existenceof a strongly positive joint quantum measure— the quantum analogue of a jointprobability measure —
Dowker, Fay   +3 more
core   +1 more source

Exploring the Limits of Quantum Nonlocality with Entangled Photons

open access: yesPhysical Review X, 2015
Nonlocality is arguably among the most counterintuitive phenomena predicted by quantum theory. In recent years, the development of an abstract theory of nonlocality has brought a much deeper understanding of the subject, revealing a rich and complex ...
Bradley G. Christensen   +4 more
doaj   +1 more source

Network quantum steering enables randomness certification without seed randomness [PDF]

open access: yesQuantum
Quantum networks with multiple sources allow the observation of quantum nonlocality without inputs. Consequently, the incompatibility of measurements is not a necessity for observing quantum nonlocality when one has access to multiple quantum sources ...
Shubhayan Sarkar
doaj   +1 more source

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