Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Kriváchy, Tamás"'
We discuss quantum network Bell nonlocality in a setting where the network structure is not fully known. More concretely, an honest user may trust their local network topology, but not the structure of the rest of the network, involving distant (and
Externí odkaz:
http://arxiv.org/abs/2406.09510
Characterizing the set of distributions that can be realized in the triangle network is a notoriously difficult problem. In this work, we investigate inner approximations of the set of local (classical) distributions of the triangle network. A quantu
Externí odkaz:
http://arxiv.org/abs/2405.08939
Autor:
Wang, Ning-Ning, Zhang, Chao, Cao, Huan, Xu, Kai, Liu, Bi-Heng, Huang, Yun-Feng, Li, Chuan-Feng, Guo, Guang-Can, Gisin, Nicolas, Kriváchy, Tamás, Renou, Marc-Olivier
In the last decade, it was understood that quantum networks involving several independent sources of entanglement which are distributed and measured by several parties allowed for completely novel forms of nonclassical quantum correlations, when enta
Externí odkaz:
http://arxiv.org/abs/2401.15428
Autor:
Pozas-Kerstjens, Alejandro, Girardin, Antoine, Kriváchy, Tamás, Tavakoli, Armin, Gisin, Nicolas
Publikováno v:
New J. Phys. 25, 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:
http://arxiv.org/abs/2305.03745
Publikováno v:
Phys. Rev. A 107, 013108 (2023)
Achieving spin squeezing within solid-state devices is a long standing research goal, due to the promise of their particularities, for instance their long coherence times, the possibility of low-temperature experiments or integration of entanglement-
Externí odkaz:
http://arxiv.org/abs/2207.02169
Publikováno v:
Phys. Rev. Research 4, 023238 (2022)
Finding the closest separable state to a given target state is a notoriously difficult task, even more difficult than deciding whether a state is entangled or separable. To tackle this task, we parametrize separable states with a neural network and t
Externí odkaz:
http://arxiv.org/abs/2112.08055
Autor:
Abiuso, Paolo, Kriváchy, Tamás, Boghiu, Emanuel-Cristian, Renou, Marc-Olivier, Pozas-Kerstjens, Alejandro, Acín, Antonio
Publikováno v:
Phys. Rev. Research 4, L012041 (2022)
The state obtained when a single photon impinges on a balanced beamsplitter is often known as single-photon entangled and its nonlocal properties have been the subject of intense debates in the quantum optics and foundations communities. It is howeve
Externí odkaz:
http://arxiv.org/abs/2108.01726
Publikováno v:
New J. Phys. 23 103034 (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. Here we propose to
Externí odkaz:
http://arxiv.org/abs/2011.05785
We provide an agent-based model to explain the emergence of collective opinions not based on feedback between different opinions, but based on emotional interactions between agents. The driving variable is the emotional state of agents, characterized
Externí odkaz:
http://arxiv.org/abs/1908.11623
Autor:
Kriváchy, Tamás, Cai, Yu, Cavalcanti, Daniel, Tavakoli, Arash, Gisin, Nicolas, Brunner, Nicolas
Publikováno v:
npj Quantum Inf 6, 70 (2020)
Characterizing quantum nonlocality in networks is a challenging, but important problem. Using quantum sources one can achieve distributions which are unattainable classically. A key point in investigations is to decide whether an observed probability
Externí odkaz:
http://arxiv.org/abs/1907.10552