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Related Experiment Video

Updated: Jun 29, 2026

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Fast and simple characterization of a photon pair source.

F Bussières¹, J A Slater, N Godbout

¹Département de Génie Physique, Laboratoire des Fibres Optiques, Ecole Polytechnique deMontréal, Montréal, Québec, Canada.

|October 15, 2008

Summary

We developed a precise model and method to measure the brightness and transmission of photon pair sources. This is crucial for optimizing quantum communication technologies.

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Area of Science:

Quantum Optics
Photonics
Quantum Information Science

Background:

Probabilistic photon pair sources are essential for quantum technologies.
Accurate characterization of source brightness and transmission is challenging.
Spontaneous Parametric Down-Conversion (SPDC) is a common source technology.

Purpose of the Study:

To present an exact model for photon pair source detection statistics.
To demonstrate a fast, simple, and precise method for measuring source brightness and channel transmissions.
To validate the model for heralded single-photon sources.

Main Methods:

Developed an exact detection statistics model for probabilistic photon pair sources.
Applied the model to measure properties of an SPDC source at 810/1550 nm.
Validated the model by measuring the second-order coherence function (g(2)(0)).

Main Results:

Demonstrated a method to accurately measure photon source brightness and transmission.
Validated the model by comparing predicted and measured g(2)(0) values.
Showcased the model's utility across a range of source brightness levels.

Conclusions:

The presented model and method offer efficient characterization of photon pair sources.
This is vital for tuning and monitoring sources for quantum communication.
The model is applicable to sources with spectral and spatial filtering.