Zobrazeno 1 - 10
of 82
pro vyhledávání: '"Pozas Kerstjens, Alejandro"'
Despite their importance in quantum theory, joint quantum measurements remain poorly understood. An intriguing conceptual and practical question is whether joint quantum measurements on separated systems can be performed without bringing them togethe
Externí odkaz:
http://arxiv.org/abs/2408.00831
Autor:
Ulibarrena, Andrés, Webb, Jonathan W., Pickston, Alexander, Ho, Joseph, Fedrizzi, Alessandro, Pozas-Kerstjens, Alejandro
Publikováno v:
npj Quantum Inf. 10, 117 (2024)
Quantum networks connect and supply a large number of nodes with multi-party quantum resources for secure communication, networked quantum computing and distributed sensing. As these networks grow in size, certification tools will be required to answ
Externí odkaz:
http://arxiv.org/abs/2403.02376
Autor:
Grzybowski, Przemysław R., Jankiewicz, Antoni, Piñol, Eloy, Cirauqui, David, Grzybowska, Dorota H., Petrykowski, Paweł M., García-March, Miguel Ángel, Lewenstein, Maciej, Muñoz-Gil, Gorka, Pozas-Kerstjens, Alejandro
It is widely known that Boltzmann machines are capable of representing arbitrary probability distributions over the values of their visible neurons, given enough hidden ones. However, sampling -- and thus training -- these models can be numerically h
Externí odkaz:
http://arxiv.org/abs/2310.14395
Semidefinite programs are convex optimisation problems involving a linear objective function and a domain of positive semidefinite matrices. Over the last two decades, they have become an indispensable tool in quantum information science. Many otherw
Externí odkaz:
http://arxiv.org/abs/2307.02551
Publikováno v:
Phys. Rev. A 110, 022617 (2024)
With the increased availability of quantum technological devices, it becomes more important to have tools to guarantee their correct nonclassical behavior. This is especially important for quantum networks, which constitute the platforms where multip
Externí odkaz:
http://arxiv.org/abs/2306.15717
Publikováno v:
Quantum 8, 1364 (2024)
Tensor networks are factorizations of high-dimensional tensors into networks of smaller tensors. They have applications in physics and mathematics, and recently have been proposed as promising machine learning architectures. To ease the integration o
Externí odkaz:
http://arxiv.org/abs/2306.08595
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. Lett. 131, 080201 (2023)
Which nonlocal correlations can be obtained, when a party has access to more than one subsystem? While traditionally nonlocality deals with spacelike separated parties, this question becomes important with quantum technologies that connect devices by
Externí odkaz:
http://arxiv.org/abs/2303.02127
Autor:
Gu, Xue-Mei, Huang, Liang, Pozas-Kerstjens, Alejandro, Jiang, Yang-Fan, Wu, Dian, Bai, Bing, Sun, Qi-Chao, Chen, Ming-Cheng, Zhang, Jun, Yu, Sixia, Zhang, Qiang, Lu, Chao-Yang, Pan, Jian-Wei
Publikováno v:
Phys. Rev. Lett. 130, 190201 (2023)
Nonlocality arising in networks composed of several independent sources gives rise to phenomena radically different from that in standard Bell scenarios. Over the years, the phenomenon of network nonlocality in the entanglement-swapping scenario has
Externí odkaz:
http://arxiv.org/abs/2302.02472
Autor:
Wang, Ning-Ning, Pozas-Kerstjens, Alejandro, Zhang, Chao, Liu, Bi-Heng, Huang, Yun-Feng, Li, Chuan-Feng, Guo, Guang-Can, Gisin, Nicolas, Tavakoli, Armin
Publikováno v:
Nature Communications 14, 2153 (2023)
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 post-cla
Externí odkaz:
http://arxiv.org/abs/2212.09765