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Mostrando ítems 1-9 de 9
Artículo
Two fundamental experimental tests of nonclassicality with qutrits
(Nature Research, 2013-07-10)
We report two fundamental experiments on three-level quantum systems (qutrits). The first one tests the simplest task for which quantum mechanics provides an advantage with respect to classical physics. The quantum advantage ...
Artículo
All-versus-nothing proof of Einstein-Podolsky-Rosen steering
(Nature Research, 2013-07-05)
Einstein-Podolsky-Rosen steering is a form of quantum nonlocality intermediate between entanglement and Bell nonlocality. Although Schro¨dinger already mooted the idea in 1935, steering still defies a complete understanding. ...
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
All-Versus-Nothing Proof of Einstein-Podolsky-Rosen Steering
(Nature Publishing Group, 2013)
Einstein-Podolsky-Rosen steering is a form of quantum nonlocality intermediate between entanglement and Bell nonlocality. Although Schro¨dinger already mooted the idea in 1935, steering still defies a complete understanding. ...
Artículo
No-hidden-variables proof for two spin-1/2 particles preselected and postselected in unentangled states
(American Physical Society, 1997-06-01)
It is a well-known fact that all the statistical predictions of quantum mechanics on the state of any physical system represented by a two-dimensional Hilbert space can always be duplicated by a noncontextual hidden-variables ...
Artículo
Two fundamental experimental tests of nonclassicality with qutrits
(Nature Publishing Group, 2013)
We report two fundamental experiments on three-level quantum systems (qutrits). The first one tests the simplest task for which quantum mechanics provides an advantage with respect to classical physics. The quantum ...
Artículo
Quantum contextuality, causality and freedom of choice
(The Royal Society, 2024-01-29)
The theme of this issue is ‘Quantum contextuality, causality and freedom of choice.’ Contextuality, including non-locality as its special case, has long since becomeone of the central topics in foundations of quantum ...
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
Kochen-Specker contextuality
(American Physical Society, 2022-12-19)
A central result in the foundations of quantum mechanics is the Kochen-Specker theorem. In short, it states that quantum mechanics is in conflict with classical models in which the result of a measurement does not depend ...