Results 51 to 60 of about 577,492 (310)

Device-independent dimension test in a multiparty Bell experiment

open access: yesNew Journal of Physics, 2019
A device-independent dimension test for a Bell experiment aims to estimate the underlying Hilbert space dimension that is required to produce given measurement statistical data without any other assumptions concerning the quantum apparatus. Previous work
Zhaohui Wei, Jamie Sikora
doaj   +1 more source

Correlation defense for quantum randomness

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2020
New nonparametric methods were developed for verification and monitoring of quantum randomness based on the ranged correlation function (RCF) and a sequence of the ranged amplitudes (SRA).
N.S. Perminov   +3 more
doaj   +1 more source

All Multiparty Quantum States Can Be Made Monogamous

open access: yes, 2014
Monogamy of quantum correlation measures puts restrictions on the sharability of quantum correlations in multiparty quantum states. Multiparty quantum states can satisfy or violate monogamy relations with respect to given quantum correlations.
Adesso   +64 more
core   +1 more source

Robust quantum correlations in out-of-equilibrium matter–light systems

open access: yesNew Journal of Physics, 2015
High precision macroscopic quantum control in interacting light–matter systems remains a significant goal toward novel information processing and ultra-precise metrology. We show that the out-of-equilibrium behavior of a paradigmatic light–matter system (
O L Acevedo   +3 more
doaj   +1 more source

Magnon-Phonon Quantum Correlation Thermometry

open access: yes, 2020
A large fraction of quantum science and technology requires low-temperature environments such as those afforded by dilution refrigerators. In these cryogenic environments, accurate thermometry can be difficult to implement, expensive, and often requires ...
Bittencourt, V.   +3 more
core   +2 more sources

The roles of quantum correlations in quantum cloning [PDF]

open access: yesThe European Physical Journal D, 2014
In this paper, we study the entanglement and quantum discord of the output modes in the unified $1\rightarrow 2$ state-dependent cloning and probabilistic quantum cloning. The tripartite entanglement among the output modes and the quantum cloning machine is also considered.
Shao-xiong Wu, Chang-shui Yu, Jun Zhang
openaire   +3 more sources

Violation of all two-party facet Bell inequalities by almost-quantum correlations

open access: yesPhysical Review Research, 2021
The characterization of the set of quantum correlations is a problem of fundamental importance in quantum information. The question whether every proper (tight) Bell inequality is violated in quantum theory is an intriguing one in this regard.
Ravishankar Ramanathan
doaj   +1 more source

Simulating quantum measurements and quantum correlations

open access: yes, 2023
This PhD thesis is focused on the quantum measurement simulability problem, that is, deciding whether a given measurement can be simulated when only a restricted subset of measurements is accessible. We provide an operational framework for this problem based on classical manipulations over the set of simulators. Particular cases of interest are further
openaire   +4 more sources

Exponential Clustering of Bipartite Quantum Entanglement at Arbitrary Temperatures

open access: yesPhysical Review X, 2022
Many inexplicable phenomena in low-temperature many-body physics are a result of macroscopic quantum effects. Such macroscopic quantumness is often evaluated via long-range entanglement, that is, entanglement in the macroscopic length scale.
Tomotaka Kuwahara, Keiji Saito
doaj   +1 more source

Experimental investigation of classical and quantum correlations under decoherence

open access: yes, 2010
It is well known that many operations in quantum information processing depend largely on a special kind of quantum correlation, that is, entanglement.
A Aiello   +38 more
core   +1 more source

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