2013/12/15 by Andreas Eckstein, Guillaume Boucher, Aristide Lemaître +6 · 1 citation
Computer Science · Physics and Astronomy · #Characterization (materials science) #Parametric statistics #Photon #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum limit #Quantum optics #Quantum sensor #Quantum state #Spontaneous parametric down-conversion #physics.optics #quant-ph
paper · pdf · doi:10.1002/lpor.201400057
published as Laser Photonics Rev. 8, No. 5, L76-L80 (2014) · 21 pages, 7 figures
arxiv created 2013/12/15 · openalex publication_date 2014/06/24 · arxiv updated 2014/09/03 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Quantum optics plays a central role in the study of fundamental concepts in quantum mechanics, and in the development of new technological applications. Typical experiments employ sources of photon pairs generated by parametric processes such as spontaneous parametric down-conversion and spontaneous four-wave-mixing. The standard characterization of these sources relies on detecting the pairs themselves and thus requires single photon detectors, which limit both measurement speed and accuracy. Here it is shown that the two-photon quantum state that would be generated by parametric fluorescence can be characterised with unprecedented spectral resolution by performing a classical experiment. This streamlined technique gives access to hitherto unexplored features of two-photon states and has the potential to speed up design and testing of massively parallel integrated nonlinear sources by providing a fast and reliable quality control procedure. Additionally, it allows for the engineering of quantum light states at a significantly higher level of spectral detail, powering future quantum optical applications based on time-energy photon correlations.