Noise reduction in photon counting by exploiting spatial correlations

0483090 - FZÚ 2018 RIV US eng J - Článek v odborném periodiku
Peřina Jr., J. - Michálek, Václav - Haderka, Ondřej
Noise reduction in photon counting by exploiting spatial correlations.
Physical Review Applied. Roč. 8, č. 4 (2017), s. 1-12, č. článku 044018. ISSN 2331-7019. E-ISSN 2331-7019
Grant CEP: GA ČR GAP205/12/0382
Institucionální podpora: RVO:68378271
Klíčová slova: parametric down-conversion * quantum imaging applications * coherence properties
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 4.782, rok: 2017

Joint photocount distributions of a weak twin beam acquired by an intensified CCD camera are analyzed with respect to the beam spatial correlations. A method for extracting these correlations from the experimental joint photocount distributions is suggested using a suitable statistical model that quantifies the contribution of spatial correlations to the joint photocount distributions. In detail, the profile of a twin-beam intensity spatial cross-correlation function is revealed from the curve that gives the genuine mean photon-pair number (both photons from a pair are detected) as a function of the extent of the detection area. Also, the principle of reducing the noise in photon-number-resolving detection by using spatial correlations is experimentally demonstrated.

Trvalý link: http://hdl.handle.net/11104/0278500