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pro vyhledávání: '"Hofmann, A F"'
Autor:
Hofmann, Holger F.
Publikováno v:
Entropy 2024, 26, 725 (2024)
Quantum contextuality describes situations where the statistics observed in different measurement contexts cannot be explained by a measurement independent reality of the system. The most simple case is observed in a three-dimensional Hilbert space,
Externí odkaz:
http://arxiv.org/abs/2405.20569
Publikováno v:
Quantum Sci. Technol. 9 045015 (2024)
The presence of an absorber in one of the paths of an interferometer changes the output statistics of that interferometer in a fundamental manner. Since the individual quantum particles detected at any of the outputs of the interferometer have not be
Externí odkaz:
http://arxiv.org/abs/2404.16477
Publikováno v:
New J. Phys. 26 063021 (2024)
In this paper, we investigate the possibility of explaining nonclassical correlations between two quantum systems in terms of quantum interferences between collective states of the two systems. We achieve this by mapping the relations between differe
Externí odkaz:
http://arxiv.org/abs/2401.16769
Autor:
Hofmann, Holger F.
Quantum information is based on the apparent contradictions between classical logic and quantum coherence described by Kochen-Specker contextuality. Surprisingly, this contradiction can be demonstrated in a comparatively simple three-path interferome
Externí odkaz:
http://arxiv.org/abs/2312.13670
Publikováno v:
Phys. Rev. A 109, 022224(2024)
Measurements map the value of a target observable onto a meter shift, resulting in a meter readout that combines the initial statistics of the meter state with the quantum statistics of the target observable. Even in the limit of weak measurement int
Externí odkaz:
http://arxiv.org/abs/2309.01932
Autor:
Hofmann, Holger F.
Publikováno v:
Optica Quantum 1, 63-70 (2023)
Quantum contextuality describes scenarios in which it is impossible to explain the experimental evidence in terms of a measurement independent reality. Here, I introduce a three-path interferometer in which all five contexts needed for a demonstratio
Externí odkaz:
http://arxiv.org/abs/2308.02086
Publikováno v:
New J. Phys. 25 113028 (2023)
We analyse the quantum Cheshire cat using contextuality theory, to see if this can tell us anything about how best to interpret this paradox. We show that this scenario can be analysed using the relation between three different measurements, which se
Externí odkaz:
http://arxiv.org/abs/2307.06583
Quantum contextuality of complementary photon polarizations explored by adaptive input state control
Publikováno v:
Phys. Rev. A 108, 062213 (2023)
We experimentally investigate non-local contextual relations between complementary photon polarizations by adapting the entanglement and the local polarizations of a two-photon state to satisfy three deterministic conditions demonstrating both quantu
Externí odkaz:
http://arxiv.org/abs/2306.06831
Autor:
Ji, Ming, Hofmann, Holger F.
Publikováno v:
Quantum 8, 1255 (2024)
In quantum theory, a measurement context is defined by an orthogonal basis in a Hilbert space, where each basis vector represents a specific measurement outcome. The precise quantitative relation between two different measurement contexts can thus be
Externí odkaz:
http://arxiv.org/abs/2305.14873
Autor:
Hofmann, Holger F.
Quantum mechanics describes the relation between different measurement contexts in terms of superpositions of the potential measurement outcomes. This relation between measurement contexts makes it impossible to determine context independent realitie
Externí odkaz:
http://arxiv.org/abs/2305.07194