Results 21 to 30 of about 111,497 (266)

Single trusted qubit is necessary and sufficient for quantum realization of extremal no-signaling correlations

open access: yesnpj Quantum Information, 2022
The problem of achieving security of device-independent (or semi-device-independent) cryptography (for quantum key distribution and randomness generation) against the most general no-signaling adversaries has remained open.
Ravishankar Ramanathan   +3 more
doaj   +1 more source

Bipartite nonlocality with a many-body system

open access: yesNew Journal of Physics, 2019
We consider a bipartite scenario where two parties hold ensembles of 1/2-spins which can only be measured collectively. We give numerical arguments supporting the conjecture that in this scenario no Bell inequality can be violated for arbitrary numbers ...
Enky Oudot   +3 more
doaj   +1 more source

Unfree gauge symmetry in the BV formalism

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
The BV formalism is proposed for the theories where the gauge symmetry parameters are unfree, being constrained by differential equations.
D. S. Kaparulin, S. L. Lyakhovich
doaj   +1 more source

Non-isometric codes for the black hole interior from fundamental and effective dynamics

open access: yesJournal of High Energy Physics, 2023
We introduce a new holographic map for encoding black hole interiors by including both fundamental and effective dynamics. This holographic map is constructed by evolving a state in the effective, semiclassical gravity description of the interior ...
Oliver DeWolfe, Kenneth Higginbotham
doaj   +1 more source

ON THE “QUANTUM” THEORY OF LIGHT [PDF]

open access: yesSchool Science and Mathematics, 1914
n ...
openaire   +2 more sources

Quantum traces in quantum Teichmüller theory [PDF]

open access: yesAlgebraic & Geometric Topology, 2010
We prove that for the torus with a hole and the sphere with four holes there is a quantum trace function in the quantum Teichmuller space satisfying the properties proposed by Chekhov and Fock in "Observables in 3D Gravity and Geodesic Algebras".
openaire   +4 more sources

Post-quantum steering is a stronger-than-quantum resource for information processing

open access: yesnpj Quantum Information, 2022
We present the first instance where post-quantum steering is a stronger-than-quantum resource for information processing – remote state preparation.
Paulo J. Cavalcanti   +4 more
doaj   +1 more source

QUANTUM MECHANICS AS QUANTUM MEASURE THEORY [PDF]

open access: yesModern Physics Letters A, 1994
The additivity of classical probabilities is only the first in a hierarchy of possible sum rules, each of which implies its successor. The first and most restrictive sum rule of the hierarchy yields measure theory in the Kolmogorov sense, which is appropriate physically for the description of stochastic processes such as Brownian motion.
openaire   +3 more sources

Proposal for demonstration of long-range cluster state entanglement in the presence of photon loss

open access: yesAPL Photonics, 2017
Photonic cluster states are a crucial resource for optical quantum computing. Recently a quantum dot single photon source has been demonstrated to produce strings of single photons in a small linear cluster state.
Thomas Nutz   +3 more
doaj   +1 more source

On quantum theory

open access: yesInternational Journal of Quantum Information, 2019
A discussion of fundamental aspects of quantum theory is presented, stressing the essential role of “events.”
openaire   +3 more sources

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