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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

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Quantifying distortion in time-correlated single photon counting: a universal parameter.

Angela Bovolenta, Alessandro Cominelli, Giulia Acconcia

|March 15, 2024

Summary

A new figure of merit quantifies distortion in time-correlated single photon counting (TCSPC). This innovation overcomes the speed-vs-distortion trade-off, enabling precise measurement analysis without compromising speed.

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Last Updated: Jun 30, 2025

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Area of Science:

Physics
Photonics
Spectroscopy

Background:

Time-correlated single photon counting (TCSPC) is a crucial technique.
Pileup distortion limits TCSPC speed and accuracy.
Current methods lack precise distortion evaluation.

Purpose of the Study:

Introduce a novel figure of merit for TCSPC.
Quantify distortion independent of signal shape.
Overcome the inherent speed-distortion trade-off in TCSPC.

Main Methods:

Development of a new quantitative parameter.
Mathematical derivations and computations.
Demonstration of parameter effectiveness.

Main Results:

A figure of merit is defined to estimate TCSPC distortion.
The parameter provides a numerical distortion assessment.
Effectiveness validated through mathematical analysis.

Conclusions:

The new figure of merit represents a significant advancement in TCSPC.
Enables precise distortion evaluation, improving measurement reliability.
Offers a turning point for optimizing TCSPC measurements.