Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Cécilia Lancien"'
Autor:
Cécilia Lancien, Andreas Winter
Publikováno v:
Quantum, Vol 8, p 1320 (2024)
We study the problem of approximating a quantum channel by one with as few Kraus operators as possible (in the sense that, for any input state, the output states of the two channels should be close to one another). Our main result is that any quantum
Externí odkaz:
https://doaj.org/article/f99d203042cf40889c4b3bb0e165d4fe
Publikováno v:
Annales Henri Poincaré
Annales Henri Poincaré, 2022, pp.97. ⟨10.1007/s00023-022-01187-9⟩
Annales Henri Poincaré, 2022, pp.97. ⟨10.1007/s00023-022-01187-9⟩
International audience; We introduce and study a class of entanglement criteria based on the idea of applying local contractions to an input multipartite state, and then computing the projective tensor norm of the output. More precisely, we apply to
Autor:
Cécilia Lancien, Christian Majenz
Publikováno v:
Quantum, Vol 4, p 313 (2020)
Unitary $t$-designs are the bread and butter of quantum information theory and beyond. An important issue in practice is that of efficiently constructing good approximations of such unitary $t$-designs. Building on results by Aubrun (Comm. Math. Phys
Externí odkaz:
https://doaj.org/article/599d93ea3e394e98ac54e6fc38c65ecc
Autor:
David Pérez-García, Cécilia Lancien
Publikováno v:
Annales Henri Poincare
Annales Henri Poincare, 2022, 23 (1), pp.141-222. ⟨10.1007/s00023-021-01087-4⟩
Annales Henri Poincaré
Annales Henri Poincaré, Springer Verlag, 2021, ⟨10.1007/s00023-021-01087-4⟩
HAL-INSA Toulouse
Hyper Article en Ligne
arXiv.org e-Print Archive
Annales Henri Poincare, 2022, 23 (1), pp.141-222. ⟨10.1007/s00023-021-01087-4⟩
Annales Henri Poincaré
Annales Henri Poincaré, Springer Verlag, 2021, ⟨10.1007/s00023-021-01087-4⟩
HAL-INSA Toulouse
Hyper Article en Ligne
arXiv.org e-Print Archive
Tensor network states are used extensively as a mathematically convenient description of physically relevant states of many-body quantum systems. Those built on regular lattices, i.e. matrix product states (MPS) in dimension 1 and projected entangled
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5874034679559fd5c1a97edba0fefa4
https://hal.science/hal-02189200
https://hal.science/hal-02189200
Autor:
Christian Majenz, Cécilia Lancien
Publikováno v:
Quantum
Quantum, 2020, ⟨10.22331/q-2020-08-28-313⟩
Quantum, Verein, 2020, ⟨10.22331/q-2020-08-28-313⟩
Quantum, 4
Quantum, Vol 4, p 313 (2020)
Quantum, 2020, ⟨10.22331/q-2020-08-28-313⟩
Quantum, Verein, 2020, ⟨10.22331/q-2020-08-28-313⟩
Quantum, 4
Quantum, Vol 4, p 313 (2020)
Unitary $t$-designs are the bread and butter of quantum information theory and beyond. An important issue in practice is that of efficiently constructing good approximations of such unitary $t$-designs. Building on results by Aubrun (Comm. Math. Phys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7aae5da81be512b93691d4a312ca2f7
https://hal.science/hal-03024389
https://hal.science/hal-03024389
Autor:
Andreas Winter, Cécilia Lancien
Publikováno v:
Chicago Journal of Theoretical Computer Science. 22:1-22
We use a recently discovered constrained de Finetti reduction (aka "Post-Selection Lemma") to study the parallel repetition of multi-player non-local games under no-signalling strategies. Since the technique allows us to reduce general strategies to
Autor:
Cécilia Lancien
Publikováno v:
Quantum Views
Quantum Views, 2020, 4, pp.44. ⟨10.22331/qv-2020-09-03-44⟩
Quantum Views, 2020, 4, pp.44. ⟨10.22331/qv-2020-09-03-44⟩
International audience
Publikováno v:
2018 IEEE International Symposium on Information Theory (ISIT)
2018 IEEE International Symposium on Information Theory (ISIT), Jun 2018, Vail, France. ⟨10.1109/ISIT.2018.8437895⟩
Christandl, M, Ferrara, R & Lancien, C 2020, ' Random Private Quantum States ', IEEE Transactions on Information Theory, vol. 66, no. 7, pp. 4621-4640 . https://doi.org/10.1109/TIT.2020.2973155
ISIT
IEEE Transactions on Information Theory
arXiv.org e-Print Archive
2018 IEEE International Symposium on Information Theory (ISIT), Jun 2018, Vail, France. ⟨10.1109/ISIT.2018.8437895⟩
Christandl, M, Ferrara, R & Lancien, C 2020, ' Random Private Quantum States ', IEEE Transactions on Information Theory, vol. 66, no. 7, pp. 4621-4640 . https://doi.org/10.1109/TIT.2020.2973155
ISIT
IEEE Transactions on Information Theory
arXiv.org e-Print Archive
The study of properties of randomly chosen quantum states has in recent years led to many insights into quantum entanglement. In this work, we study private quantum states from this point of view. Private quantum states are bipartite quantum states c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94952dcdb1343b8fbd00aae3472a6c62
http://arxiv.org/abs/1801.02861
http://arxiv.org/abs/1801.02861
Publikováno v:
Physical Review Letters
arXiv.org e-Print Archive
Physical Review Letters, American Physical Society, 2018, 121 (20)
Physical Review Letters, 2018, 121 (20)
arXiv.org e-Print Archive
Physical Review Letters, American Physical Society, 2018, 121 (20)
Physical Review Letters, 2018, 121 (20)
Genuine high-dimensional entanglement, i.e. the property of having a high Schmidt number, constitutes a resource in quantum communication, overcoming limitations of low-dimensional systems. States with a positive partial transpose (PPT), on the other
Publikováno v:
E-Prints Complutense. Archivo Institucional de la UCM
instname
Annales Henri Poincaré
Annales Henri Poincaré, Springer Verlag, 2017, 18 (12), pp.3793-3813. ⟨10.1007/s00023-017-0615-9⟩
E-Prints Complutense: Archivo Institucional de la UCM
Universidad Complutense de Madrid
instname
Annales Henri Poincaré
Annales Henri Poincaré, Springer Verlag, 2017, 18 (12), pp.3793-3813. ⟨10.1007/s00023-017-0615-9⟩
E-Prints Complutense: Archivo Institucional de la UCM
Universidad Complutense de Madrid
It is now a well-known fact that the correlations arising from local dichotomic measurements on an entangled quantum state may exhibit intrinsically non-classical features. In this paper we delve into a comprehensive study of random instances of such
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f12ebf7e39cb9764b5b87ad560634476
https://eprints.ucm.es/id/eprint/45719/1/Villanueva27libre.pdf
https://eprints.ucm.es/id/eprint/45719/1/Villanueva27libre.pdf