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Mostrando ítems 11-20 de 26
Artículo
Converting contextuality into nonlocality
(American Physical Society, 2021-08)
We introduce a general method which converts, in a unified way, any form of quantum contextuality, including any form of state-dependent contextuality, into a quantum violation of a bipartite Bell inequality. As an example, ...
Artículo
3D information-theoretic analysis of the simplest hydrogen abstraction reaction
(American Chemical Society, 2023-07-21)
We investigate the course of an elementary chemical reaction from the perspective of information theory in 3D space through the hypersurface of several information-theoretic (IT) functionals such as disequilibrium (D), ...
Artículo
Tracking the dynamics of an ideal quantum measurement
(American Physical Society, 2020-02-25)
The existence of ideal quantum measurements is one of the fundamental predictions of quantum mechanics. In theory, an ideal measurement projects a quantum state onto the eigenbasis of the measurement observable, while ...
Artículo
Bell non-locality and Kochen-Specker contextuality: how are they connected?
(Springer, 2021-05-22)
Bell non-locality and Kochen–Specker (KS) contextuality are logically independent concepts, fuel different protocols with quantum vs classical advantage, and have distinct classical simulation costs. A natural question is ...
Artículo
Spin resonance under topological driving fields
(IOP Publishing, 2017-06)
We study the dynamics of a localized spin-1/2 driven by a time-periodic magnetic field that undergoes a topological transition. Despite the strongly non-adiabatic effects dominating the spin dynamics, we find that the ...
Artículo
Single-photon quantum contextuality on a chip
(American Chemical Society, 2017-10-17)
In classical physics, properties of objects exist independently of the context, i.e., whether and how measurements are performed. Quantum physics showed this assumption to be wrong, and that Nature is indeed “contextual”. ...
Artículo
Device-independent certification of two bits of randomness from one entangled bit and Gisin's elegant Bell inequality
(American Physical Society, 2018-01-16)
We prove that as conjectured by Acín et al. [Phys. Rev. A 93, 040102(R) (2016)], two bits of randomness can be certified in a device-independent way from one bit of entanglement using the maximal quantum violation of Gisin’s ...
Artículo
Graph-theoretic approach to dimension witnessing
(IOP Publishing, 2021-03)
A fundamental problem in quantum computation and quantum information is finding the minimum quantum dimension needed for a task. For tasks involving state preparation and measurements, this problem can be addressed using ...
Artículo
Quantum contextuality provides communication complexity advantage
(American Physical Society, 2023-02-24)
Despite the conceptual importance of contextuality in quantum mechanics, there is a hitherto limited number of applications requiring contextuality but not entanglement. Here, we show that for any quantum state and observables ...
Artículo
Exponentially decreasing critical detection efficiency for any Bell inequality
(American Physical Society, 2022-11-30)
We address the problem of closing the detection efficiency loophole in Bell experiments, which is crucial for real-world applications. Every Bell inequality has a critical detection efficiency η that must be surpassed to ...