A broadband superconducting detector suitable for use in large arrays

Area of Science:

• Astrophysics
• Detector Physics

Background:

• Cryogenic detectors offer high sensitivity for astronomy but are difficult to scale into large arrays.
• Current cosmic microwave background (CMB) detectors approach photon noise limits, requiring larger arrays for deeper universe exploration.
• X-ray astronomy also demands large arrays, with single-pixel detectors reaching high resolution but lacking array integration.

Purpose of the Study:

• To demonstrate a novel superconducting detector.
• To show the detector's ease of fabrication and suitability for large-scale integration.
• To assess its potential for future astronomical applications.

Main Methods:

• Fabrication of a novel superconducting detector.
• Testing of detector sensitivity and energy resolution.
• Evaluation of array integration feasibility.

Main Results:

• The developed superconducting detector is easily fabricated.
• Its sensitivity is within an order of magnitude of requirements for CMB observations.
• Energy resolution approaches targets for future X-ray astronomy missions.

Conclusions:

• The demonstrated superconducting detector is a promising candidate for large-format arrays.
• This technology can advance CMB and X-ray astronomy by enabling sensitive, high-resolution arrays.
• Further development could overcome current limitations in detector scalability.