Results 41 to 50 of about 4,887 (84)

Experimental violation of a Bell-like inequality with optical vortex beams

open access: yesNew Journal of Physics, 2015
Optical beams with topological singularities have a Schmidt decomposition. Hence, they display features typically associated with bipartite quantum systems; in particular, these classical beams can exhibit entanglement. This classical entanglement can be
B Stoklasa   +5 more
doaj   +1 more source

Thermodynamic cost of creating correlations

open access: yesNew Journal of Physics, 2015
We investigate the fundamental limitations imposed by thermodynamics for creating correlations. Considering a collection of initially uncorrelated thermal quantum systems, we ask how much classical and quantum correlations can be obtained via a cyclic ...
Marcus Huber   +6 more
doaj   +1 more source

Three-party pure quantum states are determined by two two-party reduced states

open access: yes, 2004
We can uniquely calculate almost all entangled state vectors of tripartite systems ABC if we know the reduced states of any two bipartite subsystems, e.g., of AB and of BC.
Lajos Diósi, M.A. Nielsen
core   +1 more source

Bipartite Bell inequalities with three ternary-outcome measurements—from theory to experiments

open access: yesNew Journal of Physics, 2016
We explore quantum nonlocality in one of the simplest bipartite scenarios. Several new facet-defining Bell inequalities for the $\{[3\;3\;3]\;[3\;3\;3]\}$ scenario are obtained with their quantum violations analyzed in details.
Sacha Schwarz   +3 more
doaj   +1 more source

The photon identification loophole in EPRB experiments: computer models with single-wing selection

open access: yesOpen Physics, 2017
Recent Einstein-Podolsky-Rosen-Bohm experiments [M. Giustina et al. Phys. Rev. Lett. 115, 250401 (2015); L. K. Shalm et al. Phys. Rev. Lett. 115, 250402 (2015)] that claim to be loophole free are scrutinized.
De Raedt Hans   +2 more
doaj   +1 more source

Unlocking fermionic mode entanglement

open access: yesNew Journal of Physics, 2016
Aside from other puzzling features of entanglement, it has been debated whether a physically meaningful notion of entanglement requires two (or more) particles as carriers of the correlated degrees-of-freedom, or if a single particle could be considered ...
Nicolai Friis
doaj   +1 more source

Quantum limit for driven linear non-Markovian open-quantum-systems

open access: yesNew Journal of Physics, 2015
The interplay between non-Markovian dynamics and driving fields in the survival of entanglement between two non-degenerate oscillators is considered here.
Andrés F Estrada, Leonardo A Pachón
doaj   +1 more source

Detecting metrologically useful entanglement in the vicinity of Dicke states

open access: yesNew Journal of Physics, 2015
We present a method to verify the metrological usefulness of noisy Dicke states of a particle ensemble with only a few collective measurements, without the need for a direct measurement of the sensitivity.
Iagoba Apellaniz   +4 more
doaj   +1 more source

Common Coherence Witnesses and Common Coherent States. [PDF]

open access: yesEntropy (Basel), 2021
Wang BH, Ding ZH, Ma Z, Fei SM.
europepmc   +1 more source

Bohr against Bell: complementarity versus nonlocality

open access: yesOpen 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.
Khrennikov Andrei
doaj   +1 more source

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