Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Leonardo A. M. Souza"'
Autor:
Isa Carolina P. Espirito Santo, Luiza L. Almeida, Izabella M.B. Marques, Gisela M. Matos, Eduardo Martins Netto, Bruno B. Andrade, Michael S. Rocha, Paulo S. Silveira-Mattos, Nelia Claudia Neri Araujo, Leonardo A. M. Souza, María B. Arriaga, Caroline M. Andrade, Juan M. Cubillos-Angulo, Constança Margarida Sampaio Cruz
Publikováno v:
International Journal of Infectious Diseases, Vol 93, Iss, Pp 277-283 (2020)
International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases
International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases
Background: The present study evaluated factors associated with losses in the latent tuberculosis infection (LTBI) cascade of care in contacts of tuberculosis (TB) patients, in a referral center from a highly endemic region in Brazil. Methods: Contac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9068c63369d49c4bcf1b697e5a7e3d9c
http://www.sciencedirect.com/science/article/pii/S1201971220300734
http://www.sciencedirect.com/science/article/pii/S1201971220300734
Autor:
Pietro Liuzzo-Scorpo, Leonardo A. M. Souza, Gerardo Adesso, Wojciech Roga, Nadja K. Bernardes
Publikováno v:
Physical Review Letters
LOCUS Repositório Institucional da UFV
Universidade Federal de Viçosa (UFV)
instacron:UFV
LOCUS Repositório Institucional da UFV
Universidade Federal de Viçosa (UFV)
instacron:UFV
We investigate dynamics of Gaussian states of continuous variable systems under Gaussianity preserving channels. We introduce a hierarchy of such evolutions encompassing Markovian, weakly and strongly non-Markovian processes, and provide simple crite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8b1c7f00e32067d278caef08d865acf
https://nottingham-repository.worktribe.com/file/838382/1/1610.07893.pdf
https://nottingham-repository.worktribe.com/file/838382/1/1610.07893.pdf
Autor:
Vittorio Giovannetti, Antonella De Pasquale, Leonardo A. M. Souza, L. Rigovacca, Gerardo Adesso, Alessandro Farace
Publikováno v:
Physical Review A
Physical review. A (Online) 95 (2017): 52331. doi:10.1103/PhysRevA.95.052331
info:cnr-pdr/source/autori:Rigovacca L.; Farace A.; Souza L.A.M.; De Pasquale A.; Giovannetti V.; Adesso G./titolo:Versatile Gaussian probes for squeezing estimation/doi:10.1103%2FPhysRevA.95.052331/rivista:Physical review. A (Online)/anno:2017/pagina_da:52331/pagina_a:/intervallo_pagine:52331/volume:95
Physical review. A (Online) 95 (2017): 52331. doi:10.1103/PhysRevA.95.052331
info:cnr-pdr/source/autori:Rigovacca L.; Farace A.; Souza L.A.M.; De Pasquale A.; Giovannetti V.; Adesso G./titolo:Versatile Gaussian probes for squeezing estimation/doi:10.1103%2FPhysRevA.95.052331/rivista:Physical review. A (Online)/anno:2017/pagina_da:52331/pagina_a:/intervallo_pagine:52331/volume:95
We consider an instance of black-box quantum metrology in the Gaussian framework, where we aim to estimate the amount of squeezing applied on an input probe, without previous knowledge on the phase of the applied squeezing. By taking the quantum Fish
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::096c7f901daef2ab17664d1a78b8691b
Publikováno v:
Optics Communications. 281:4696-4704
The dissipative dynamics of Gaussian squeezed states (GSS) and coherent superposition states (CSS) are analytically obtained and compared. Time scales for sustaining different quantum properties such as squeezing, negativity of the Wigner function or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6aa1f54f2e0321a36fb0724bcc25c6e6
https://doi.org/10.1016/j.optcom.2008.06.017
https://doi.org/10.1016/j.optcom.2008.06.017
Autor:
Leonardo A. M. Souza, Gerardo Adesso, Himadri Shekhar Dhar, Manabendra Nath Bera, Pietro Liuzzo-Scorpo
Publikováno v:
Physical Review A
We investigate the non-Markovianity of continuous variable Gaussian quantum channels through the evolution of an operational metrological quantifier, namely the Gaussian interferometric power, which captures the minimal precision that can be achieved
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c045a8c72a6507f1a664599329a5c3a8
https://nottingham-repository.worktribe.com/file/765291/1/15PRA_92_052122.pdf
https://nottingham-repository.worktribe.com/file/765291/1/15PRA_92_052122.pdf
Publikováno v:
LOCUS Repositório Institucional da UFV
Universidade Federal de Viçosa (UFV)
instacron:UFV
Universidade Federal de Viçosa (UFV)
instacron:UFV
In this work we use the formalism of chord functions ( i.e. characteristic functions) to analytically solve quadratic non-autonomous Hamiltonians coupled to a reservoir composed by an infinity set of oscillators, with Gaussian initial state. We analy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9182bcb27a2960e426a3dff605b13d8e
http://arxiv.org/abs/1405.7955
http://arxiv.org/abs/1405.7955
Publikováno v:
Physical Review A. 82
We investigate theoretically an open dynamics for two modes of electromagnetic field inside a microwave cavity. The dynamics is Markovian and determined by two types of reservoirs: the "natural" reservoirs due to dissipation and temperature of the ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02ed93445e8b5bd69ca204227eb52b37
https://doi.org/10.1103/physreva.82.042302
https://doi.org/10.1103/physreva.82.042302
Publikováno v:
Physical review. A 79 (2009): 040305-1–040305-4. doi:10.1103/PhysRevA.79.040305
info:cnr-pdr/source/autori:G. Adesso; F. Dell'Anno; S. De Siena; F. Illuminati; L. A. M. Souza/titolo:Optimal estimation of losses at the ultimate quantum limit with non-Gaussian states/doi:10.1103%2FPhysRevA.79.040305/rivista:Physical review. A/anno:2009/pagina_da:040305-1/pagina_a:040305-4/intervallo_pagine:040305-1–040305-4/volume:79
info:cnr-pdr/source/autori:G. Adesso; F. Dell'Anno; S. De Siena; F. Illuminati; L. A. M. Souza/titolo:Optimal estimation of losses at the ultimate quantum limit with non-Gaussian states/doi:10.1103%2FPhysRevA.79.040305/rivista:Physical review. A/anno:2009/pagina_da:040305-1/pagina_a:040305-4/intervallo_pagine:040305-1–040305-4/volume:79
We address the estimation of the loss parameter of a bosonic channel probed by arbitrary signals. Unlike the optimal Gaussian probes, which can attain the ultimate bound on precision asymptotically either for very small or very large losses, we prove
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6718349d6b4bc77c062451f5d4e8796
http://arxiv.org/abs/0807.3958
http://arxiv.org/abs/0807.3958
Autor:
M. C. Nemes, Leonardo A. M. Souza
We derive an upper limit for the mixedness of single bosonic mode gaussian states propagating in dissipative channels. It is a function of the initial squeezing and temperature of the channel only. Moreover the time at which von Neumann's entropy rea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bde94daeb0a14612f2ed34d0899f33f4
http://arxiv.org/abs/0706.4271
http://arxiv.org/abs/0706.4271
Autor:
Júlia Esteves Parreira, Leonardo A. M. Souza, K. M. Fonseca Romero, Walter F. Wreszinski, M. C. Nemes
Publikováno v:
Journal of Physics A: Mathematical and Theoretical. 41:115303
We study and compare the information loss of a large class of Gaussian bipartite systems. It includes the usual Caldeira-Leggett type model as well as Anosov models (parametric oscillators, the inverted oscillator environment, etc), which exhibit ins
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96d18db849e455940aed13eee8e4ba58
https://doi.org/10.1088/1751-8113/41/11/115303
https://doi.org/10.1088/1751-8113/41/11/115303