Physics – Quantum Physics
Scientific paper
2012-02-07
Physics
Quantum Physics
14 pages, 14 figures
Scientific paper
The measurement of photon-number statistics of fields composed of photon pairs, generated in spontaneous parametric down-conversion and detected by an intensified CCD camera is described. Final quantum detection efficiencies, electronic noises, finite numbers of detector pixels, transverse intensity spatial profiles of the detected beams as well as losses of single photons from a pair are taken into account in a developed general theory of photon-number detection. The measured data provided by an iCCD camera with single-photon detection sensitivity are analyzed along the developed theory. Joint signal-idler photon-number distributions are recovered using the reconstruction method based on the principle of maximum likelihood. The range of applicability of the method is discussed. The reconstructed joint signal-idler photon-number distribution is compared with that obtained by a method that uses superposition of signal and noise and minimizes photoelectron entropy. Statistics of the reconstructed fields are identified to be multi-mode Gaussian. Elements of the measured as well as the reconstructed joint signal-idler photon-number distributions violate classical inequalities. Sub-shot-noise correlations in the difference of the signal and idler photon numbers as well as partial suppression of odd elements in the distribution of the sum of signal and idler photon numbers are observed.
Jan Perina Jr.
Haderka Ondrej
Hamar Martin
Michalek Vaclav
No associations
LandOfFree
Photon-number distributions of twin beams generated in spontaneous parametric down-conversion and measured by an intensified CCD camera does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Photon-number distributions of twin beams generated in spontaneous parametric down-conversion and measured by an intensified CCD camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photon-number distributions of twin beams generated in spontaneous parametric down-conversion and measured by an intensified CCD camera will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-579330