Optics Express

Accessing the spectrum of a single-photon by the Hong-Ou-Mandel interference

Lifeng Duan, Aojie Xu, Lirong Wang, Yun Zhang

Published Jan 5, 2024• 1 citation

Abstract

We present and experimentally demonstrate a method for determining the spectral characterization of a single-photon state. This technique is based on the Hong-Ou-Mandel interference between a well-defined weak coherent state and a measured single-photon state. We estimate the spectrum of the single-photon state by fitting the measured interference dip with proposed model and least square method. Our method is particularly useful for characterising spectral property the single-photon state. It opens a way for robust and efficient on-line monitoring the single-photon emitters.

DOI: 10.1364/oe.510983

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