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Updated: May 27, 2026

Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2
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Self consistent, absolute calibration technique for photon number resolving detectors.

A Avella1, G Brida, I P Degiovanni

  • 1INRIM, Strada delle Cacce 91, Torino 10135, Italy.

Optics Express
|November 24, 2011
PubMed
Summary
This summary is machine-generated.

We developed a new absolute calibration method for photon number resolving detectors. This technique uses a heralded photon source and does not require reference standards for accurate single-photon level calibration.

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Area of Science:

  • Quantum optics
  • Quantum information science

Background:

  • Photon number resolving detectors are crucial for quantum information, metrology, and fundamental quantum mechanics research.
  • Accurate calibration at the single-photon level is essential for these applications.

Purpose of the Study:

  • To propose and validate an innovative absolute calibration technique for photon number resolving detectors.
  • To provide a method independent of external reference standards and heralding detector performance.

Main Methods:

  • Utilizing a pulsed heralded photon source generated via spontaneous parametric down-conversion.
  • Implementing an absolute calibration technique that determines quantum efficiency as a function of detected photon numbers.
  • Validating the method by calibrating a Transition Edge Sensor (TES) based photon number resolving detector.

Main Results:

  • The proposed absolute calibration technique is independent of heralding detector efficiency.
  • Quantum efficiency is accurately determined as a function of detected photon numbers for the calibrated detector.
  • Successful calibration of a TES detector, demonstrating the technique's practical applicability.

Conclusions:

  • The developed absolute calibration technique offers a reliable and self-contained method for photon number resolving detectors.
  • This method enhances the accuracy and accessibility of single-photon level detector characterization.
  • The technique is suitable for advanced quantum information protocols and fundamental physics experiments.