Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Emmanuel Zambrini Cruzeiro"'
Autor:
Yuan Liu, Ho Yiu Chung, Emmanuel Zambrini Cruzeiro, Junior R. Gonzales-Ureta, Ravishankar Ramanathan, Adán Cabello
Publikováno v:
Physical Review Research, Vol 6, Iss 4, p L042035 (2024)
We show that a quantum correlation p is in a face of the nonsignaling polytope with no local points if and only if p has nonlocal content 1, if and only if p allows for a Greenberger-Horne-Zeilinger-like proof, and if and only if p provides a perfect
Externí odkaz:
https://doaj.org/article/dd1f092cc6d14318b39af36c56abe8f3
Autor:
Luís Bugalho, Emmanuel Zambrini Cruzeiro, Kevin C. Chen, Wenhan Dai, Dirk Englund, Yasser Omar
Publikováno v:
npj Quantum Information, Vol 9, Iss 1, Pp 1-13 (2023)
Abstract Giovannetti, Lloyd, and Maccone (2008) proposed a quantum random access memory (QRAM) architecture to retrieve arbitrary superpositions of N (quantum) memory cells via quantum switches and $$O(\log (N))$$ O ( log ( N ) ) address qubits. Towa
Externí odkaz:
https://doaj.org/article/5a7c23f4bc8941939b39a6dbabd62882
Publikováno v:
Entropy, Vol 26, Iss 7, p 568 (2024)
The metrological limits of thermometry operated in nonequilibrium dynamical regimes are analyzed. We consider a finite-dimensional quantum system, employed as a quantum thermometer, in contact with a thermal bath inducing Markovian thermalization dyn
Externí odkaz:
https://doaj.org/article/2a66adef14d6462ab1b96e7f952ad6bc
Publikováno v:
Quantum, Vol 7, p 1090 (2023)
Semi-device-independent quantum key distribution aims to achieve a balance between the highest level of security, device independence, and experimental feasibility. Semi-quantum key distribution presents an intriguing approach that seeks to minimize
Externí odkaz:
https://doaj.org/article/0bc3297573f844c2909874fcadde757b
Autor:
Nicolas Gisin, Jean-Daniel Bancal, Yu Cai, Patrick Remy, Armin Tavakoli, Emmanuel Zambrini Cruzeiro, Sandu Popescu, Nicolas Brunner
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-6 (2020)
The no-signaling principle constrains which multipartite correlations are allowed, but network scenarios considered so far were limited to specific cases. Here, the authors apply inflation technique to the no-input/binary-output triangle network, and
Externí odkaz:
https://doaj.org/article/56041fa608dd4eba9ffbfdfc143f2c8f
Publikováno v:
Quantum, Vol 6, p 620 (2022)
We introduce new methods and tools to study and characterise classical and quantum correlations emerging from prepare-and-measure experiments with informationally restricted communication. We consider the most general kind of informationally restrict
Externí odkaz:
https://doaj.org/article/eda46ce909204a0e983bc955c4a446b1
Publikováno v:
PRX Quantum, Vol 2, Iss 2, p 020334 (2021)
We introduce a hierarchy of semidefinite relaxations of the set of quantum correlations in generalized contextuality scenarios. This constitutes a simple and versatile tool for bounding the magnitude of quantum contextuality. To illustrate its utilit
Externí odkaz:
https://doaj.org/article/f148499e2c014a288f4c9c127e9e0040
Autor:
Armin Tavakoli, Emmanuel Zambrini Cruzeiro, Jonatan Bohr Brask, Nicolas Gisin, Nicolas Brunner
Publikováno v:
Quantum, Vol 4, p 332 (2020)
Quantum communication leads to strong correlations, that can outperform classical ones. Complementary to previous works in this area, we investigate correlations in prepare-and-measure scenarios assuming a bound on the information content of the quan
Externí odkaz:
https://doaj.org/article/e53f634d79bf4d3c93a8d3a9bf9e18c2
Publikováno v:
Entropy, Vol 21, Iss 2, p 171 (2019)
We study Bell scenarios with binary outcomes supplemented by one bit of classical communication. We developed a method to find facet inequalities for such scenarios even when direct facet enumeration is not possible, or at least difficult. Using this
Externí odkaz:
https://doaj.org/article/326ef642edad41608cbf216b46693984
Autor:
Emmanuel Zambrini Cruzeiro, Alexey Tiranov, Jonathan Lavoie, Alban Ferrier, Philippe Goldner, Nicolas Gisin, Mikael Afzelius
Publikováno v:
New Journal of Physics, Vol 20, Iss 5, p 053013 (2018)
Efficient optical pumping is an important tool for state initialization in quantum technologies, such as optical quantum memories. In crystals doped with Kramers rare-earth ions, such as erbium and neodymium, efficient optical pumping is challenging
Externí odkaz:
https://doaj.org/article/ff71779d36cb4ea2839b05e6fd4f7e87