title: Rigorous criterion for characterizing correlated multiphoton emissions.
abstract: Strong correlation of photons, particularly in the single-photon regime, has recently been exploited for various applications in quantum information processing. Existing correlation measurements, however, do not fully characterize multi-photon correlation in a relevant context and may pose limitations in practical situations. We propose a conceptually rigorous, but easy-to-implement, criterion for detecting correlated multi-photon emission out of a quantum optical system, drawn from the context of wavefunction collapse. We illustrate the robustness of our approach against experimental limitations by considering an anharmonic optical system.
authors.affiliation: Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea.
authors.forename: Hyun-Gue
authors.initials: HG
authors.lastname: Hong
authors.forename: Hyunchul
authors.initials: H
authors.lastname: Nha
authors.forename: Jai-Hyung
authors.initials: JH
authors.lastname: Lee
authors.forename: Kyungwon
authors.initials: K
authors.lastname: An
mesh_terms: D000465:Algorithms; D015233:Models, Statistical; D055096:Optical Devices; D055095:Optics and Photonics; D017785:Photons; D016012:Poisson Distribution; D011789:Quantum Theory; D012542:Scattering, Radiation; D013053:Spectrophotometry / Q000379:methods