Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Ana Belen Sainz"'
Autor:
David Schmid, Thomas C. Fraser, Ravi Kunjwal, Ana Belen Sainz, Elie Wolfe, Robert W. Spekkens
Publikováno v:
Quantum, Vol 7, p 1194 (2023)
A standard approach to quantifying resources is to determine which operations on the resources are freely available, and to deduce the partial order over resources that is induced by the relation of convertibility under the free operations. If the re
Externí odkaz:
https://doaj.org/article/ee30e3e6d59c47bb841a0bd6946b5330
Publikováno v:
Entropy, Vol 26, Iss 8, p 643 (2024)
Recently, there has been substantial interest in studying the dynamics of quantum theory beyond that of states, in particular, the dynamics of channels, measurements, and higher-order transformations. Castro-Ruiz et al. pursues this using the process
Externí odkaz:
https://doaj.org/article/c0f3585c0c014114ac9b3ba00c5ccabd
Publikováno v:
npj Quantum Information, Vol 8, Iss 1, Pp 1-10 (2022)
Abstract We present the first instance where post-quantum steering is a stronger-than-quantum resource for information processing – remote state preparation. In addition, we show that the phenomenon of post-quantum steering is not just a mere mathe
Externí odkaz:
https://doaj.org/article/aa5e2252bbed4408b107f74f927702b6
Publikováno v:
Quantum, Vol 7, p 1134 (2023)
When two parties, Alice and Bob, share correlated quantum systems and Alice performs local measurements, Alice's updated description of Bob's state can provide evidence of nonclassical correlations. This simple scenario, famously introduced by Einste
Externí odkaz:
https://doaj.org/article/09d080ec87b04d03b8e5eba75e960061
Publikováno v:
Quantum, Vol 7, p 1080 (2023)
How to understand the set of correlations admissible in nature is one outstanding open problem in the core of the foundations of quantum theory. Here we take a complementary viewpoint to the device-independent approach, and explore the correlations t
Externí odkaz:
https://doaj.org/article/cbab85a5131d4227b4040c286cdee6ac
Publikováno v:
Quantum, Vol 7, p 926 (2023)
Einstein-Podolsky-Rosen (EPR) steering is often (implicitly or explicitly) taken to be evidence for spooky action-at-a-distance. An alternative perspective on steering is that Alice has no causal influence on the physical state of Bob's system; rathe
Externí odkaz:
https://doaj.org/article/50d3a6eb7f264ac288f82f0fa53a3748
Publikováno v:
Physical Review Research, Vol 2, Iss 2, p 023292 (2020)
Measurement incompatibility is one of the basic aspects of quantum theory. Here we study the structure of the set of compatible, i.e., jointly measurable, measurements. We are interested in whether or not there exist compatible measurements whose par
Externí odkaz:
https://doaj.org/article/e6dfa5285e4c4781b051222de66f780b
Publikováno v:
Quantum, Vol 4, p 280 (2020)
We take a resource-theoretic approach to the problem of quantifying nonclassicality in Bell scenarios. The resources are conceptualized as probabilistic processes from the setting variables to the outcome variables having a particular causal structur
Externí odkaz:
https://doaj.org/article/ae4082b26f824ec39f6fd76a3a05e549
Publikováno v:
Electronic Proceedings in Theoretical Computer Science, Vol 171, Iss Proc. QPL 2013, Pp 63-70 (2014)
We introduce a framework to describe probabilistic models in Bell experiments, and more generally in contextuality scenarios. Such a scenario is a hypergraph whose vertices represent elementary events and hyperedges correspond to measurements. A prob
Externí odkaz:
https://doaj.org/article/c8cf904656904c2084dc928680aea158
Autor:
Thomas Van Himbeeck, Jonatan Bohr Brask, Stefano Pironio, Ravishankar Ramanathan, Ana Belén Sainz, Elie Wolfe
Publikováno v:
Quantum, Vol 3, p 186 (2019)
The causal structure of any experiment implies restrictions on the observable correlations between measurement outcomes, which are different for experiments exploiting classical, quantum, or post-quantum resources. In the study of Bell nonlocality, t
Externí odkaz:
https://doaj.org/article/72dd8f4925c14960a2c059af363d0e5d