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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

Pseudo-random single photon counting for time-resolved optical measurement.

Qiang Zhang1, Hock Wei Soon, Haiting Tian

  • 1Division of Bioengineering, National University of Singapore, Singapore.

Optics Express
|August 20, 2008
PubMed
Summary
This summary is machine-generated.

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A novel time-resolved optical measurement technique uses a modulated laser diode and single photon counting for high temporal resolution. This cost-effective method achieves a 150-picosecond rise time, offering portability and fast data acquisition.

Area of Science:

  • Optics and Photonics
  • Instrumentation and Measurement

Background:

  • Conventional time-resolved optical systems often rely on short pulse lasers.
  • These systems can be complex and expensive.

Purpose of the Study:

  • To introduce a new, cost-effective time-resolved optical measurement method.
  • To achieve high temporal resolution using readily available components.

Main Methods:

  • Combining single photon counting with spread spectrum techniques.
  • Utilizing a pseudo-random bit sequence modulated laser diode instead of a short pulse laser.
  • Employing periodic cross-correlation to extract the impulse response.

Main Results:

  • Experimental validation of the proposed method.

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Related Experiment Videos

Last 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

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

  • Achieved a temporal resolution with a rise time of approximately 150 picoseconds.
  • Demonstrated high photon counting rates and fast data acquisition.

    • Conclusions:

    • The new method offers a feasible and advantageous alternative for time-resolved optical measurements.
    • Benefits include high temporal resolution, portability, and lower cost.
    • Suitable for applications requiring precise timing and efficient data handling.