Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Radek Machulka"'
Publikováno v:
Physical Review Research, Vol 6, Iss 1, p 013065 (2024)
States obtained from multimode twin beams by symmetric as well as asymmetric photon subtraction are experimentally investigated. Using the joint photocount distributions measured by an intensified CCD camera, their joint photon-number distributions a
Externí odkaz:
https://doaj.org/article/b180f5e271a4405cae02a45759018892
Non-classicality criteria for general N-dimensional optical fields are derived. They involve intensity moments, the probabilities of photon-number distributions or combinations of both. The Hillery criteria for the sums of the probabilities of even o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5fe47203025a8dedc1e4de06514b8177
http://arxiv.org/abs/2201.02116
http://arxiv.org/abs/2201.02116
Publikováno v:
Optics express. 29(19)
Photon-number-resolved post-selection on one beam out of a correlated system of three beams with bi-partite photon-number correlations gives rise to joint photon-number distributions with the probabilities forming checkered patterns. These patterns o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12b07a2866b4f6210c510ccd8ff5872a
https://pubmed.ncbi.nlm.nih.gov/34614710
https://pubmed.ncbi.nlm.nih.gov/34614710
Two twin beams with a shared signal beam and separated idler beams are used together with the photon-number-resolving postselection in the signal beam to arrive at two coupled beams with anticorrelations in photon-number fluctuations. Moreover, the b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::371cab92afee93276cc99c7371b41c06
Strong correlations between the signal and idler beams imprinted during their generation dominantly determine the properties of twin beams. They are also responsible for the waves in intensity coherence observed in the wave-vector space of a twin bea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::950f8a13dea99151088b1620a8b6d8cd
http://arxiv.org/abs/2004.10186
http://arxiv.org/abs/2004.10186
Autor:
Nadezhda M. Bulgakova, Alexander V. Bulgakov, Ondřej Haderka, Radek Machulka, Eleanor E. B. Campbell, Tomas Mocek, Inam Mirza, Vladimir P. Zhukov
Publikováno v:
Bulgakov, A V, Mirza, I, Bulgakova, N M, Zhukov, V P, Machulka, R, Haderka, O, Campbell, E E B & Mocek, T 2018, ' Initiation of air ionization by ultrashort laser pulses: Evidence for a role of metastable-state air molecules ', Journal of Physics D: Applied Physics . https://doi.org/10.1088/1361-6463/aac56a
Transmission measurements for femtosecond laser pulses focused in air with spectral analysis of emission from the focal region have been carried out for various pulse energies and air pressures. The air breakdown threshold and pulse attenuation due t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a53c83c535cc59a1be57fdc27c8e79c9
https://doi.org/10.1088/1361-6463/aac56a
https://doi.org/10.1088/1361-6463/aac56a
Publikováno v:
Scientific Reports
Spatial and spectral coherence of high-intensity twin-beam states propagating from the near-field to the far-field configurations is experimentally investigated by measuring intensity auto- and cross-correlation functions. The experimental setup incl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54e9890d0dd3bccd6b575a3597f50121
Autor:
Jan Peřina, Radek Machulka, Enrico Brambilla, Ottavia Jedrkiewicz, Ondřej Haderka, Marco Lamperti, Alessia Allevi, Maria Bondani, Alessandra Gatti
Publikováno v:
SPIE conference, 13-16 April 2015
info:cnr-pdr/source/autori:Allevi, Alessia; Lamperti, Marco; Machulka, Radek; Jedrkiewicz, Ottavia; Brambilla, Enrico; Gatti, Alessandra; Perina, Jan, Jr.; Haderka, Ondrej; Bondani, Maria/congresso_nome:SPIE conference/congresso_luogo:/congresso_data:13-16 April 2015/anno:2015/pagina_da:/pagina_a:/intervallo_pagine
info:cnr-pdr/source/autori:Allevi, Alessia; Lamperti, Marco; Machulka, Radek; Jedrkiewicz, Ottavia; Brambilla, Enrico; Gatti, Alessandra; Perina, Jan, Jr.; Haderka, Ondrej; Bondani, Maria/congresso_nome:SPIE conference/congresso_luogo:/congresso_data:13-16 April 2015/anno:2015/pagina_da:/pagina_a:/intervallo_pagine
It is well known that optical twin-beam states (TWB) generated by spontaneous parametric down-conversion (PDC) exhibit spatial and spectral correlations, which can appear in single-shot images obtained by using an imaging spectrometer to resolve emis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9ad43d1853795b294046c7b8736d206
Single-photon sources based on the process of spontaneous parametric down-conversion play a key role in various applied disciplines of quantum optics. We characterize intrinsic luminescence of BBO crystals as a source of non-removable noise in quantu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64f6d71bc0913ba647919b43d4032d74
https://hdl.handle.net/11383/1970320
https://hdl.handle.net/11383/1970320
It is shown that spatial correlation functions measured for correlated photon pairs at the single-photon level correspond to speckle patterns visible at high intensities. This correspondence is observed for the first time in one experimental setup by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d50e4d4c392ae2b4d8ebb633530a540