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Related Concept Videos

High-Performance Liquid Chromatography: Types of Detectors01:15

High-Performance Liquid Chromatography: Types of Detectors

The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...
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Related Experiment Video

Updated: May 24, 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
11:27

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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Proposal for a superconducting photon number resolving detector with large dynamic range.

Saeedeh Jahanmirinejad1, Andrea Fiore

  • 1COBRA Research Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands. s.jahanmiri.nejad@tue.nl

Optics Express
|March 16, 2012
PubMed
Summary
This summary is machine-generated.

We developed a new detector for counting single photons with a wide dynamic range. This photon number resolving detector offers linear, high-fidelity, and fast detection from one to tens of photons.

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Area of Science:

  • Quantum optics
  • Superconducting devices
  • Photonics

Background:

  • Accurate photon detection is crucial for quantum information science and low-light imaging.
  • Existing detectors often face limitations in dynamic range or speed.

Purpose of the Study:

  • To introduce a novel detector structure for photon number resolution.
  • To achieve a large dynamic range and high fidelity in photon detection.

Main Methods:

  • A series connection of N superconducting nanowires, each with a parallel integrated resistor.
  • Photon absorption triggers a current switch to the resistor, generating a measurable voltage pulse.
  • Output voltage is the sum of individual pulses, processed by a high input impedance preamplifier.

Main Results:

  • Demonstrated linear and high-fidelity photon detection.
  • Achieved fast response times for photon counting.
  • Successfully resolved photon numbers from single to tens of photons.

Conclusions:

  • The proposed detector structure enables efficient and accurate photon number resolution.
  • This technology has potential applications in quantum technologies and sensitive optical measurements.