Photocount measurements as a tool for investigation of non-classical properties of twin beams

Jan Peřina Jr.; Ondřej Haderka; Jaromír Křepelka; Martin Hamar; Václav Michálek; Maria Bondani; Alessia Allevi; Alessandra Andreoni

doi:10.1117/12.822349

20 November 2008 Photocount measurements as a tool for investigation of non-classical properties of twin beams

Jan Peřina Jr., Ondřej Haderka, Jaromír Křepelka, Martin Hamar, Václav Michálek, Maria Bondani, Alessia Allevi, Alessandra Andreoni

Author Affiliations +

Proceedings Volume 7141, 16th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 714104 (2008) https://doi.org/10.1117/12.822349
Event: 16th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2008, Polanica Zdroj, Poland

Abstract

Joint signal-idler photoelectron distributions of twin beams have been measured recently in two distinct regimes: either the mean number of photon pairs per one pump pulse is lower that the number of independent modes or vice versa. Exploiting a microscopic quantum theory for joint quasi-distributions in parametric down-conversion based on the model of superposition of signal and noise we characterize properties of twin beams in terms of quasidistributions using experimental data. In parallel to the microscopic model, joint signal-idler photon-number distribution is reconstructed using the method of maximum likelihood. Negative values as well as oscillating behavior in quantum region are characteristic for the joint signal-idler quasi-distributions of integrated intensities. The larger the mean number of photon pairs per mode the weaker the quantum features are. However, they survive even in the mesoscopic regime, i.e. when tens of photon pairs per mode are present on average. Also the conditional and difference photon-number distributions are shown to be sub-Poissonian and sub-shot-noise, respectively. Violation of classical inequalities for photon-number distributions is discussed.

Citation Download Citation

Jan Peřina Jr., Ondřej Haderka, Jaromír Křepelka, Martin Hamar, Václav Michálek, Maria Bondani, Alessia Allevi, and Alessandra Andreoni "Photocount measurements as a tool for investigation of non-classical properties of twin beams", Proc. SPIE 7141, 16th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 714104 (20 November 2008); https://doi.org/10.1117/12.822349

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available