Zobrazeno 1 - 10
of 668
pro vyhledávání: '"Nicolas Gisin"'
Autor:
Ning-Ning Wang, Alejandro Pozas-Kerstjens, Chao Zhang, Bi-Heng Liu, Yun-Feng Huang, Chuan-Feng Li, Guang-Can Guo, Nicolas Gisin, Armin Tavakoli
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-10 (2023)
Abstract Networks composed of independent sources of entangled particles that connect distant users are a rapidly developing quantum technology and an increasingly promising test-bed for fundamental physics. Here we address the certification of their
Externí odkaz:
https://doaj.org/article/90917cf0b04c4333982d40babcf89bfc
Autor:
Nicolas Gisin, Flavio Del Santo
Publikováno v:
Quantum, Vol 8, p 1267 (2024)
Naive attempts to put together relativity and quantum measurements lead to signaling between space-like separated regions. In QFT, these are known as $\textit{impossible measurements}$. We show that the same problem arises in non-relativistic quantum
Externí odkaz:
https://doaj.org/article/ae9e00580b2d43ec911799880002ddb0
Publikováno v:
npj Quantum Information, Vol 7, Iss 1, Pp 1-6 (2021)
Abstract Increasingly sophisticated quantum computers motivate the exploration of their abilities in certifying genuine quantum phenomena. Here, we demonstrate the power of state-of-the-art IBM quantum computers in correlation experiments inspired by
Externí odkaz:
https://doaj.org/article/e17273afb4d74aeaba1c8670afdcea25
Autor:
Ya-Li Mao, Zheng-Da Li, Anna Steffinlongo, Bixiang Guo, Biyao Liu, Shufeng Xu, Nicolas Gisin, Armin Tavakoli, Jingyun Fan
Publikováno v:
Physical Review Research, Vol 5, Iss 1, p 013104 (2023)
The nonlocality of an entangled qubit pair can be recycled for several Bell experiments. Here, we go beyond standard Bell scenarios and investigate the recycling of nonlocal resources in a quantum network. First, we show that the ability to recycle n
Externí odkaz:
https://doaj.org/article/2376b4782b5e4d3d8de42219d93552f7
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:
New Journal of Physics, Vol 25, Iss 11, p 113037 (2023)
We investigate network nonlocality in the triangle scenario when all three parties have no input and binary outputs. Through an explicit example, we prove that this minimal scenario supports nonlocal correlations compatible with no-signaling and inde
Externí odkaz:
https://doaj.org/article/f1e0fd2efe6a4f1eab3a688c62e9b95f
Autor:
Flavio Del Santo, Nicolas Gisin
Publikováno v:
Entropy, Vol 23, Iss 10, p 1326 (2021)
A long-standing tradition, largely present in both the physical and the philosophical literature, regards the advent of (special) relativity—with its block-universe picture—as the failure of any indeterministic program in physics. On the contrary
Externí odkaz:
https://doaj.org/article/8c8480dd8a384bc694920d1d22f03220
Autor:
Florian Fröwis, Peter C. Strassmann, Alexey Tiranov, Corentin Gut, Jonathan Lavoie, Nicolas Brunner, Félix Bussières, Mikael Afzelius, Nicolas Gisin
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-6 (2017)
The presence of entanglement in macroscopic systems is notoriously difficult to observe. Here, the authors develop a witness which allow them to demonstrate entanglement between millions of atoms in a solid-state quantum memory prepared by the herald
Externí odkaz:
https://doaj.org/article/db2150b873424a7293c4e3fa6136e8f4
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043122 (2020)
Symmetric informationally complete measurements (SICs) are elegant, celebrated, and broadly useful discrete structures in Hilbert space. We introduce a more sophisticated discrete structure compounded by several SICs. A SIC compound is defined to be
Externí odkaz:
https://doaj.org/article/cfa6a866c08a4d44bff51133b8c5609c
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