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Related Experiment Video

Updated: Jul 2, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

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

Published on: September 5, 2019

Spurious pulse rejection in a photon correlation experiment.

R Walraven1, Y Yeh

  • 1Department of Applied Science, University of California, Davis, California 95616, USA.

The Review of Scientific Instruments
|June 1, 1979
PubMed
Summary
This summary is machine-generated.

A new circuit effectively suppresses spurious pulses in photon correlation experiments. This method ensures accurate signal correlation spectra, even at low count rates, by rejecting excess noise pulses.

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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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Last Updated: Jul 2, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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Published on: September 5, 2019

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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Published on: April 4, 2017

Area of Science:

  • Photonics and Spectroscopy
  • Experimental Physics
  • Signal Processing

Background:

  • Photon correlation spectroscopy is sensitive to noise pulses.
  • Low count rate experiments are particularly susceptible to spurious signals.
  • Accurate correlation spectra are crucial for data interpretation.

Purpose of the Study:

  • To develop a method for suppressing spurious pulses in photon correlation experiments.
  • To improve the accuracy of correlation spectra obtained at low count rates.
  • To present the design and application of a novel noise rejection circuit.

Main Methods:

  • A spurious noise pulse rejection circuit was designed and implemented.
  • The circuit operates by rejecting pulse streams with more than two pulses within a given interval.
  • The circuit was integrated as an optional feature into an existing correlation computer system.

Main Results:

  • The developed circuit significantly suppresses the effect of spurious pulses.
  • Accurate signal correlation spectra were obtained in a test case with excessive spurious pulse correlations.
  • The method proved effective even at low count rates (<2 true pulses per total measured correlation time).

Conclusions:

  • The spurious noise pulse rejection circuit is a valuable addition to photon correlation experiments.
  • This method enhances data reliability by minimizing noise interference.
  • The technique enables more precise analysis of signal events in challenging experimental conditions.