Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Emilio Bagan"'
Publikováno v:
Physical Review X, Vol 9, Iss 4, p 041029 (2019)
We introduce the problem of unsupervised classification of quantum data, namely, of systems whose quantum states are unknown. We derive the optimal single-shot protocol for the binary case, where the states in a disordered input array are of two type
Externí odkaz:
https://doaj.org/article/2dd0f1f77043465c813abfa113b195a2
Publikováno v:
New Journal of Physics, Vol 14, Iss 10, p 105015 (2012)
We address the problem of estimating pure qubit states with non-ideal (noisy) measurements in the multiple-copy scenario, where the data consist of a number N of identically prepared qubits. We show that the average fidelity of the estimates can incr
Externí odkaz:
https://doaj.org/article/aba2c3e05bbe46648abed4449b066263
Publikováno v:
Recercat: Dipósit de la Recerca de Catalunya
Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Dipòsit Digital de Documents de la UAB
Universitat Autònoma de Barcelona
Recercat. Dipósit de la Recerca de Catalunya
instname
Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Dipòsit Digital de Documents de la UAB
Universitat Autònoma de Barcelona
Recercat. Dipósit de la Recerca de Catalunya
instname
In this paper we present the solution to the problem of optimally discriminating among quantum states, i.e., identifying the states with maximum probability of success when a certain fixed rate of inconclusive answers is allowed. By varying the incon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a626e7dc35937efd4c1fc353fc41e78
http://hdl.handle.net/2072/401093
http://hdl.handle.net/2072/401093
We present wave-particle duality relations involving the relative entropy coherence measure, which plays a prominent role in the resource theory of coherence. The main input in these relations is an entropic bound for the which-way information, which
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::edf279b841178c08b6e024c81dd0e3ad
Wave-particle duality relations express the fact that knowledge about the path a particle took suppresses information about its wave-like properties, in particular, its ability to generate an interference pattern. Recently, duality relations in which
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c495ae3d4998f94401e9f761de820f57
http://arxiv.org/abs/1803.04079
http://arxiv.org/abs/1803.04079
Publikováno v:
Physical Review Letters. 120
We give operational meaning to wave-particle duality in terms of discrimination games. Duality arises as a constraint on the probability of winning these games. The games are played with the aid of an n-port interferometer, and involve 3 parties, Ali
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f645597a1e28683a07ea9a46d92b5ac2
https://doi.org/10.1103/physrevlett.120.050402
https://doi.org/10.1103/physrevlett.120.050402
Publikováno v:
Physical review letters. 118(16)
We investigate the ability of a quantum measurement device to discriminate two states or, generically, two hypothesis. In full generality, the measurement can be performed a number $n$ of times, and arbitrary pre-processing of the states and post-pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69e0b180547fab88da024bcd42f60f56
https://pubmed.ncbi.nlm.nih.gov/28474916
https://pubmed.ncbi.nlm.nih.gov/28474916
Publikováno v:
Physical Review Letters. 116
We solve the long-standing problem of making n perfect clones from m copies of one of two known pure states with minimum failure probability in the general case where the known states have arbitrary a priori probabilities. The solution emerges from a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09e936ce050b7f5d1f9f5e3038f50dde
https://doi.org/10.1103/physrevlett.116.200401
https://doi.org/10.1103/physrevlett.116.200401
Publikováno v:
Physical Review Letters. 116
We find two relations between coherence and path-information in a multi-path interferometer. The first builds on earlier results for the two-path interferometer, which used minimum-error state discrimination between detector states to provide the pat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58ab3cb705e1aec6fb622e4be03409d7
https://doi.org/10.1103/physrevlett.116.160406
https://doi.org/10.1103/physrevlett.116.160406
Probabilistic quantum state transformations can be characterized by the degree of state separation they provide. This, in turn, sets limits on the success rate of these transformations. We consider optimum state separation of two known pure states in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75f076a6604d2c3fb9c6a3cd956ddfa0