Zobrazeno 1 - 10
of 128
pro vyhledávání: '"Michael J W Hall"'
Autor:
Michael J. W. Hall
Publikováno v:
Entropy, Vol 24, Iss 11, p 1679 (2022)
An uncertainty relation for the Rényi entropies of conjugate quantum observables is used to obtain a strong Heisenberg limit of the form RMSE≥f(α)/(⟨N⟩+12), bounding the root mean square error of any estimate of a random optical phase shift i
Externí odkaz:
https://doaj.org/article/7e4e1dd054d04546b28a32610479fcb6
Autor:
Andrzej Grudka, Michael J. W. Hall, Michał Horodecki, Ryszard Horodecki, Jonathan Oppenheim, John A. Smolin
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 11, Pp 1-25 (2018)
Abstract Of course not, but if one believes that information cannot be destroyed in a theory of quantum gravity, then we run into apparent contradictions with quantum theory when we consider evaporating black holes. Namely that the no-cloning theorem
Externí odkaz:
https://doaj.org/article/dba64317544f4bf8b92ab0aa1461da87
Autor:
Michael J. W. Hall
Publikováno v:
Entropy, Vol 15, Iss 9, Pp 3698-3713 (2013)
The correlation distance quantifies the statistical independence of two classical or quantum systems, via the distance from their joint state to the product of the marginal states. Tight lower bounds are given for the mutual information between pairs
Externí odkaz:
https://doaj.org/article/4905d434254948efb3b3a4cb960d36dd
Publikováno v:
Physical Review A. 105
There is currently much interest in the recycling of entangled systems, for use in quantum information protocols by sequential observers. In this work, we study the sequential generation of Bell nonlocality via recycling one or both components of two
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d47a81f8513e0378ab99ab41884291dd
https://doi.org/10.1103/physreva.105.022411
https://doi.org/10.1103/physreva.105.022411
Autor:
Michael J W Hall
The additional precession of Mercury due to general relativity can be calculated by a method that is no more difficult than solving for the Newtonian orbit. The method relies on linearizing the relativistic orbit equation, is simpler than standard te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c1566260e7a067445017cbc7f07792d
Publikováno v:
Entropy, Vol 20, Iss 8, p 567 (2018)
“Locality” is a fraught word, even within the restricted context of Bell’s theorem. As one of us has argued elsewhere, that is partly because Bell himself used the word with different meanings at different stages in his career. The original, we
Externí odkaz:
https://doaj.org/article/fecd42b5de66438c99ae20a71be38344
Publikováno v:
Mathematics, Vol 4, Iss 1, p 8 (2016)
The well-known Robertson–Schrödinger uncertainty relations have state-dependent lower bounds, which are trivial for certain states. We present a general approach to deriving tight state-independent uncertainty relations for qubit measurements that
Externí odkaz:
https://doaj.org/article/8fa8af8b12914a21a260f39a02aebf14
Autor:
Michael J. W. Hall, Cyril Branciard
Publikováno v:
Physical Review A
Physical Review A, American Physical Society, 2020, 102 (5), pp.052228. ⟨10.1103/PhysRevA.102.052228⟩
Physical Review A, American Physical Society, 2020, 102 (5), pp.052228. ⟨10.1103/PhysRevA.102.052228⟩
Device independent protocols based on Bell nonlocality, such as quantum key distribution and randomness generation, must ensure no adversary can have prior knowledge of the measurement outcomes. This requires a measurement independence assumption: th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5533b5118aeaeeba0756c10aeddc7b93
Autor:
Michael J W Hall, Shuming Cheng
Publikováno v:
Journal of Physics A: Mathematical and Theoretical. 55:045301
The Horodecki criterion provides a necessary and sufficient condition for a two-qubit state to be able to manifest Bell nonlocality via violation of the Clauser–Horne–Shimony–Holt (CHSH) inequality. It requires, however, the assumption that sui
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4210ec2965d0da745eb6cd732f9b2105
https://doi.org/10.1088/1751-8121/ac44ee
https://doi.org/10.1088/1751-8121/ac44ee
Autor:
Ángel Rivas, Michael J. W. Hall
Publikováno v:
Physical Review A. 100
We look at what type of arguments can rule out the joint reality (or value definiteness) of two observables of a physical system, such as a qubit, and give several strong yet simple no-go results based on assumptions typically weaker than those consi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0b4ec4e8a21fb54463c63ea9c440605
https://doi.org/10.1103/physreva.100.062105
https://doi.org/10.1103/physreva.100.062105