Results 1 to 10 of about 602 (134)

Decoherence-Induced Sudden Death of Entanglement and Bell Nonlocality

Photonics, 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, Kim Yoon-Ho
exaly   +3 more sources

Mathematically Proving Bell Nonlocality Motivated by the GHZ Argument

IEEE Access, 2021
Bell nonlocality of quantum states is an important resource in quantum information and then has various applications. It is usually detected by the violation of some Bell’s inequalities and the all-versus-nothing test. In the present paper, we aim
Qiaowei Zhang, Zhihua Guo, Huaixin Cao   +2 more
exaly   +3 more sources

Nonlocality activation in a photonic quantum network [PDF]

Nature Communications
Bell nonlocality refers to correlations between two distant, entangled particles that challenge classical notions of local causality. Beyond its foundational significance, nonlocality is crucial for device-independent technologies like quantum key ...
Luis Villegas-Aguilar, Emanuele Polino, Farzad Ghafari, Marco Túlio Quintino, Kiarn T. Laverick, Ian R. Berkman, Sven Rogge, Lynden K. Shalm, Nora Tischler, Eric G. Cavalcanti, Sergei Slussarenko, Geoff J. Pryde   +11 more
doaj   +2 more sources

Nonlocality in quantum cloning states [PDF]

Scientific Reports
This study investigates the nonlocality characteristics of output states produced by a universal quantum cloning machine, with particular emphasis on the Bell-CHSH inequality violations exhibited by the two-qubit reduced states of cloned outputs. Through
Jun Liu, Zhiwen Mo
doaj   +2 more sources

Bohr against Bell: complementarity versus nonlocality

Open Physics, 2017
In this note we compare the views of Bohr (known as the Copenhagen interpretation of quantum mechanics) with the views of Bell: complementarity versus nonlocality.
Andrei Khrennikov
exaly   +2 more sources

Optimal and tight Bell inequalities for state-independent contextuality sets

Physical Review Research, 2023
Two fundamental quantum resources, nonlocality and contextuality, can be connected through Bell inequalities that are violated by state-independent contextuality (SI-C) sets.
Junior R. Gonzales-Ureta, Ana Predojević, Adán Cabello   +2 more
doaj   +1 more source

Einstein-Podolsky-Rosen Steering for Mixed Entangled Coherent States

Entropy, 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, Kamal Berrada, Mariam Algarni, Hichem Eleuch   +3 more
doaj   +1 more source

Local hidden variable values without optimization procedures [PDF]

Quantum, 2023
The problem of computing the local hidden variable (LHV) value of a Bell inequality plays a central role in the study of quantum nonlocality. In particular, this problem is the first step towards characterizing the LHV polytope of a given scenario.
Dardo Goyeneche, Wojciech Bruzda, Ondřej Turek, Daniel Alsina, Karol Życzkowski   +4 more
doaj   +1 more source

Causal hierarchy of multipartite Bell nonlocality [PDF]

Quantum, 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, Daniel Cavalcanti, Leandro Aolita   +2 more
doaj   +1 more source

Is the Devil in h?

Entropy, 2021
This note is a part of my effort to rid quantum mechanics (QM) nonlocality. Quantum nonlocality is a two faced Janus: one face is a genuine quantum mechanical nonlocality (defined by the Lüders’ projection postulate).
Andrei Khrennikov
doaj   +1 more source