Results 61 to 70 of about 4,651 (153)
Popescu-Rohrlich correlations as a unit of nonlocality [PDF]
, 2005 A set of nonlocal correlations that have come to be known as a PR box suggest themselves as a natural unit of nonlocality, much as a singlet is a natural unit of entanglement. We present two results relevant to this idea.
Barrett, Jonathan, Pironio, Stefano
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Security of Device-Independent Quantum Key Distribution in the Bounded-Quantum-Storage Model
Physical Review X, 2013 Device-independent quantum key distribution (DIQKD) is a formalism that supersedes traditional quantum key distribution, as its security does not rely on any detailed modeling of the internal working of the devices.
S. Pironio +3 more
doaj +1 more source
Detection Loophole in Bell experiments: How post-selected local correlations can look non-local [PDF]
, 2011 A common problem in Bell type experiments is the well-known detection loophole: if the detection efficiencies are not perfect and if one simply post-selects the conclusive events, one might observe a violation of a Bell inequality, even though a local ...
Branciard, Cyril
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Device-independent randomness generation from several Bell estimators
New Journal of Physics, 2018 Device-independent randomness generation and quantum key distribution protocols rely on a fundamental relation between the non-locality of quantum theory and its random character.
Olmo Nieto-Silleras +3 more
doaj +1 more source
Bounding the persistency of the nonlocality of W states [PDF]
, 2016 The nonlocal properties of the W states are investigated under particle loss. By removing all but two particles from an $N$-qubit W state, the resulting two-qubit state is still entangled. Hence, the W state has high persistency of entanglement.
Bene, Erika +3 more
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Causal hierarchy of multipartite Bell nonlocality
, 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.
Aolita, Leandro +2 more
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Bell tests for continuous variable systems using hybrid measurements and heralded amplifiers
, 2012 We present Bell tests for optical continuous variable systems, combining both hybrid measurements (i.e. measuring both particle and wave aspects of light) and heralded amplifiers.
Brask, Jonatan Bohr +3 more
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Mutually unbiased bases: polynomial optimization and symmetry [PDF]
QuantumA set of $k$ orthonormal bases of $\mathbb C^d$ is called mutually unbiased if $|\langle e,f\rangle |^2 = 1/d$ whenever $e$ and $f$ are basis vectors in distinct bases. A natural question is for which pairs $(d,k)$ there exist $k$ mutually unbiased bases
Sander Gribling, Sven Polak
doaj +1 more source
, 2016 The rates at which a user can generate device-independent quantum random numbers from a Bell-type experiment depend on the measurements that he performs.
Assad, Syed M +2 more
core +1 more source
Random 'choices' and the locality loophole
, 2014 It has been claimed that to close the locality loophole in a Bell experiment, random numbers of quantum origin should be used for selecting the measurement settings.
Pironio, Stefano
core