Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Gachechiladze, Mariami"'
The rapid advancement of quantum computers makes it particularly important to develop methods for certifying their correct functioning. In a single-device setup, we propose a simple protocol called quantum system quizzing. This protocol achieves self
Externí odkaz:
http://arxiv.org/abs/2411.04215
Autor:
Krebs, Robin, Gachechiladze, Mariami
A deep understanding of quantum entanglement is vital for advancing quantum technologies. The strength of entanglement can be quantified by counting the degrees of freedom that are entangled, which results in a quantity called Schmidt number. A parti
Externí odkaz:
http://arxiv.org/abs/2402.12966
We develop an efficient method for certifying single-qubit quantum gates in a black-box scenario, assuming only the dimension of the quantum system is known. The method is based on testing the outcomes of exact quantum computations on a single qubit,
Externí odkaz:
http://arxiv.org/abs/2401.17006
Measurement-based quantum computing (MBQC) is a promising approach to reducing circuit depth in noisy intermediate-scale quantum algorithms such as the Variational Quantum Eigensolver (VQE). Unlike gate-based computing, MBQC employs local measurement
Externí odkaz:
http://arxiv.org/abs/2312.13241
Publikováno v:
Phys. Rev. Lett. 133, 160201 (2024)
Information causality was initially proposed as a physical principle aimed at deriving the predictions of quantum mechanics on the type of correlations observed in the Bell experiment. In the same work, information causality was famously shown to imp
Externí odkaz:
http://arxiv.org/abs/2308.02478
Quantum hypergraph states are the natural generalization of graph states. Here we investigate and analytically quantify entanglement and nonlocality for large classes of quantum hypergraph states. More specifically, we connect the geometric measure o
Externí odkaz:
http://arxiv.org/abs/2302.01695
Publikováno v:
J. Phys. A: Math. Theor. 56, 425301 (2023)
We consider the problem of entanglement detection in the presence of faulty, potentially malicious detectors. A common - and, as of yet, the only - approach to this problem is to perform a Bell test in order to identify nonlocality of the measured en
Externí odkaz:
http://arxiv.org/abs/2301.13680
Instrumental variables allow for quantification of cause and effect relationships even in the absence of interventions. To achieve this, a number of causal assumptions must be met, the most important of which is the independence assumption, which sta
Externí odkaz:
http://arxiv.org/abs/2111.03029
Publikováno v:
Comm. Math. Phys. 401 (3), 2023
A causal structure is a description of the functional dependencies between random variables. A distribution is compatible with a given causal structure if it can be realized by a process respecting these dependencies. Deciding whether a distribution
Externí odkaz:
http://arxiv.org/abs/2110.14659
Autor:
Agresti, Iris, Poderini, Davide, Polacchi, Beatrice, Miklin, Nikolai, Gachechiladze, Mariami, Suprano, Alessia, Polino, Emanuele, Milani, Giorgio, Carvacho, Gonzalo, Chaves, Rafael, Sciarrino, Fabio
Publikováno v:
Sci. Adv. 8, eabm1515 (2022)
Since Bell's theorem, it is known that the concept of local realism fails to explain quantum phenomena. Indeed, the violation of a Bell inequality has become a synonym of the incompatibility of quantum theory with our classical notion of cause and ef
Externí odkaz:
http://arxiv.org/abs/2108.08926