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Almost-Quantum Correlations Violate the No-Restriction Hypothesis

open access: yesPhysical Review Letters, 2018
To identify which principles characterize quantum correlations, it is essential to understand in which sense this set of correlations differs from that of almost quantum correlations.
Ana Belen Sainz   +2 more
exaly   +3 more sources

Probing the non-classicality of temporal correlations [PDF]

open access: yesQuantum, 2017
Correlations between spacelike separated measurements on entangled quantum systems are stronger than any classical correlations and are at the heart of numerous quantum technologies.
Martin Ringbauer, Rafael Chaves
doaj   +4 more sources

Separation of quantum, spatial quantum, and approximate quantum correlations [PDF]

open access: yesQuantum, 2021
Quantum nonlocal correlations are generated by implementation of local quantum measurements on spatially separated quantum subsystems. Depending on the underlying mathematical model, various notions of sets of quantum correlations can be defined. In this
Salman Beigi
doaj   +3 more sources

Certification of qubits in the prepare-and-measure scenario with large input alphabet and connections with the Grothendieck constant

open access: yesScientific Reports, 2023
We address the problem of testing the quantumness of two-dimensional systems in the prepare-and-measure (PM) scenario, using a large number of preparations and a large number of measurement settings, with binary outcome measurements. In this scenario, we
Péter Diviánszky   +3 more
doaj   +1 more source

Study of the effect of higher-order dispersions on photoionisation induced by ultrafast laser pulses applying a classical theoretical method

open access: yesScientific Reports, 2022
We investigated the effect of higher order dispersion on ultrafast photoionisation with Classical Trajectory Monte Carlo (CTMC) method for hydrogen and krypton atoms.
István Márton, László Sarkadi
doaj   +1 more source

Polarimetric Quantum-Strong Correlations with Independent Photons on the Poincaré Sphere

open access: yesQuantum Beam Science, 2022
Controllable, quantum-strong correlations of polarization states can be implemented with multi-photon independent states. Polarization-based photonic quantum correlations can be traced back to the overlap of the polarization Stokes vectors on the ...
Andre Vatarescu
doaj   +1 more source

Vital role of magnetocrystalline anisotropy in cubic chiral skyrmion hosts

open access: yesnpj Quantum Materials, 2021
Magnetic anisotropy is anticipated to govern the formation of exotic spin textures reported recently in cubic chiral magnets, like low-temperature tilted conical and skyrmion lattice (SkL) states and metastable SkLs with various lattice geometry ...
M. Preißinger   +12 more
doaj   +1 more source

On exact overlaps in integrable spin chains

open access: yesJournal of High Energy Physics, 2020
We compute the exact overlaps between integrable boundary states and on-shell Bethe states for integrable spin chains. Our method is based on the coordinate Bethe Ansatz and does not rely on the “rotation trick” of the corresponding lattice model.
Yunfeng Jiang, Balázs Pozsgay
doaj   +1 more source

Optimal tests of genuine multipartite nonlocality

open access: yesNew Journal of Physics, 2022
We propose an optimal and efficient numerical test for witnessing genuine multipartite nonlocality based on a geometric approach. In particular, we consider two non-equivalent models of local hidden variables, namely the Svetlichny and the no-signaling ...
Mahasweta Pandit   +4 more
doaj   +1 more source

Informationally restricted quantum correlations [PDF]

open access: yesQuantum, 2020
Quantum communication leads to strong correlations, that can outperform classical ones. Complementary to previous works in this area, we investigate correlations in prepare-and-measure scenarios assuming a bound on the information content of the quantum ...
Armin Tavakoli   +4 more
doaj   +1 more source

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