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Hybrid frequency-time spectrograph for the spectral measurement of the two-photon state



Author(s): Xiang, X (Xiang, Xiao); Dong, RF (Dong, Ruifang); Quan, RN (Quan, Runai); Jin, YQ (Jin, Yaqing); Yang, Y (Yang, Ye); Li, M (Li, Ming); Liu, T (Liu, Tao); Zhang, SG (Zhang, Shougang)

Source: OPTICS LETTERS Volume: 45 Issue: 11 Pages: 2993-2996 DOI: 10.1364/OL.392744 Published: JUN 1 2020

Abstract: In this Letter, a hybrid frequency-time spectrograph combining a tunable optical filter and a dispersive element is presented for measurement of the spectral properties of the two-photon state. In comparison with the previous single-photon spectrograph utilizing the dispersive Fourier transformation (DFT) technique, this method is advanced. since it avoids the need for additional wavelength calibration and the electronic laser trigger for coincidence measurement; therefore, its application is extended to continuous wave (CW) pumped two-photon sources. The achievable precision of the spectrum measurement has also been discussed in theory and demonstrated experimentally with a CW pumped periodically poled lithium niobate (PPLN) waveguide-based spontaneous parametric down-conversion photon source. Such a device is expected to be a versatile tool for the characterization of the frequency entangled. two-photon state. (C) 2020 Optical Society of America

Accession Number: WOS:000537763300012

PubMed ID: 32479441

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

Li, Ming                  0000-0001-8959-9619

ISSN: 0146-9592

eISSN: 1539-4794

Full Text:


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