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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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Digital implementation of TCSPC.

Sucbei Moon, Byungjun Park, Youngjae Won

|April 3, 2020

Summary

This summary is machine-generated.

We developed a digital method for time-correlated single-photon counting (TCSPC) using high-speed digitization. This digitally implemented TCSPC (dTCSPC) reliably measures fluorescence lifetimes and enables time-resolved spectroscopy.

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Area of Science:

Instrumentation and Measurement
Spectroscopy
Photonics

Background:

Time-correlated single-photon counting (TCSPC) is crucial for measuring fluorescence lifetimes and time-resolved phenomena.
Traditional TCSPC methods can be complex and require specialized hardware.

Purpose of the Study:

To introduce a novel digital instrumentation method for TCSPC.
To demonstrate the reliability and efficiency of the digital approach for photon pulse discrimination.

Main Methods:

Digitization of single-photon detector signals using a high-speed analog-to-digital converter.
Digital processing of digitized signals to determine precise photon arrival times.
Implementation of a digitally implemented TCSPC (dTCSPC) system.

Main Results:

The dTCSPC system successfully digitizes pulsed single-photon signals.
The digital processing effectively determines photon detection times.
The method allows for smart discrimination of valid photon pulses.

Conclusions:

The digitally implemented TCSPC (dTCSPC) offers a smart and reliable alternative for fluorescence lifetime measurements.
This digital instrumentation method enhances time-resolved spectroscopy capabilities.
The dTCSPC approach simplifies TCSPC implementation through digital processing.