High-speed batch processing of semidefinite programs with feedforward neural networks
New Journal of Physics, 2021 Semidefinite programming is an important optimization task, often used in time-sensitive applications. Though they are solvable in polynomial time, in practice they can be too slow to be used in online, i.e. real-time applications.
Tamás Kriváchy +4 more
doaj +1 more source
Effects of preparation and measurement misalignments on the security of the BB84 quantum key distribution protocol [PDF]
, 2013 The ideal Bennett-Brassard 1984 (BB84) quantum key distribution protocol is based on the preparation and measurement of qubits in two alternative bases differing by an angle of pi/2.
Pironio, Stefano, Woodhead, Erik
core +1 more source
The local content of all pure two-qubit states [PDF]
, 2012 The (non-)local content in the sense of Elitzur, Popescu, and Rohrlich (EPR2) [Phys. Lett. A 162, 25 (1992)] is a natural measure for the (non-)locality of quantum states. Its computation is in general difficult, even in low dimensions, and is one of the
A. Méthot +12 more
core +2 more sources
Maximal randomness from partially-entangled states
, 2020 We investigate how much randomness can be extracted from a generic partially-entangled pure state of two qubits in a device-independent setting, where a Bell test is used to certify the correct functioning of the apparatus.
Acín, Antonio +6 more
core +1 more source
Bilocal versus nonbilocal correlations in entanglement-swapping experiments [PDF]
, 2011 Entanglement swapping is a process bywhich two initially independent quantum systems can become entangled and generate nonlocal correlations. To characterize such correlations, we compare them to those predicted by bilocal models, where systems that are ...
C. Branciard +3 more
semanticscholar +1 more source
Hyperdense coding and superadditivity of classical capacities in hypersphere theories
New Journal of Physics, 2015 In quantum superdense coding, two parties previously sharing entanglement can communicate a two bit message by sending a single qubit. We study this feature in the broader framework of general probabilistic theories.
Serge Massar +2 more
doaj +1 more source
Semi-device-independent bounds on entanglement
, 2011 Detection and quantification of entanglement in quantum resources are two key steps in the implementation of various quantum-information processing tasks.
A. A. Methot +7 more
core +2 more sources
Bell inequalities for three systems and arbitrarily many measurement outcomes
, 2012 We present a family of Bell inequalities for three parties and arbitrarily many outcomes, which can be seen as a natural generalization of the Mermin Bell inequality.
A. C. Doherty +12 more
core +3 more sources
Security of practical private randomness generation [PDF]
, 2012 Measurements on entangled quantum systems necessarily yield outcomes that are intrinsically unpredictable if they violate a Bell inequality. This property can be used to generate certified randomness in a device-independent way, i.e., without making ...
D. Knuth +11 more
core +2 more sources
Maximal violation of the I3322 inequality using infinite dimensional quantum systems
, 2010 The I3322 inequality is the simplest bipartite two-outcome Bell inequality beyond the Clauser-Horne-Shimony-Holt (CHSH) inequality, consisting of three two-outcome measurements per party.
A. A. Méthot +5 more
core +1 more source