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Photonic Quantum Computing

Direct measurement of coherent light proportion from a practical laser source

arXiv
Authors: Xi Jie Yeo, Eva Ernst, Alvin Leow, Jaesuk Hwang, Lijiong Shen, Christian Kurtsiefer, Peng Kian Tan

Year

2023

Paper ID

53779

Status

Preprint

Abstract Read

~2 min

Abstract Words

64

Citations

N/A

Abstract

We present a technique to estimate the proportion of coherent emission in the light emitted by a practical laser source without spectral filtering. The technique is based on measuring interferometric photon correlations between the output ports of an asymmetric Mach-Zehnder interferometer. With this, we characterize the fraction of coherent emission in the light emitted by a laser diode when transiting through the lasing threshold.

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  • This paper contributes to the Photonic Quantum Computing research area in the Quantum Articles archive.
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  • We present a technique to estimate the proportion of coherent emission in the light emitted by a practical laser source without spectral filtering.

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