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Single Molecule Fluorescence Microscopy on Planar Supported Bilayers
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A superconducting nanowire single-photon camera with 400,000 pixels.

B G Oripov1,2, D S Rampini3,4, J Allmaras5

  • 1National Institute of Standards and Technology, Boulder, CO, USA. bakhrom.oripov@nist.gov.

Nature
|October 25, 2023
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Summary
This summary is machine-generated.

Researchers developed a 400,000-pixel superconducting nanowire single-photon detector (SNSPD) camera, a 400-fold increase over previous limits. This breakthrough enables large-format superconducting imaging with high efficiency across the electromagnetic spectrum.

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Area of Science:

  • Superconducting detector technology
  • Photonics and optical sensing
  • Quantum information science

Background:

  • Superconducting detectors offer high sensitivity and speed for detecting faint electromagnetic signals.
  • Existing superconducting nanowire single-photon detectors (SNSPDs) have excellent performance but are limited to kilopixel arrays.
  • There is a need for large-format superconducting cameras for advanced scientific applications.

Purpose of the Study:

  • To develop a large-scale superconducting camera with significantly more pixels than the current state-of-the-art.
  • To demonstrate the feasibility of scaling SNSPD technology to hundreds of thousands of pixels.
  • To enable new scientific investigations requiring high-resolution, high-efficiency photon detection.

Main Methods:

  • Fabrication of a 400,000-pixel superconducting nanowire single-photon detector (SNSPD) array.
  • Characterization of the camera's performance, including quantum efficiency, count rate, and dark-count rate.
  • Design of an imaging area without ancillary circuitry for scalability.

Main Results:

  • A 400,000-pixel SNSPD camera was successfully developed, a 400x improvement in pixel count.
  • The camera achieved unity quantum efficiency at 370 nm and 635 nm.
  • Demonstrated a high count rate (1.1 x 10^5 cps) and extremely low dark-count rate (1.0 x 10^-4 cps/detector).

Conclusions:

  • The developed 400,000-pixel SNSPD camera represents a significant advancement in superconducting detector technology.
  • The scalable architecture paves the way for future large-format superconducting cameras.
  • This technology will enable new frontiers in fundamental science, quantum technologies, and imaging applications.