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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
Published on: August 2, 2019
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Scalable implementation of a superconducting nanowire single-photon detector array with a superconducting digital
Optics Express
|May 15, 2020
Summary
We developed a novel readout scheme for superconducting nanowire single-photon detector (SSPD) arrays, achieving high-resolution imaging with precise temporal information. This system demonstrates potential for ultimate cameras with exceptional time resolution.
Area of Science:
- Physics
- Electrical Engineering
- Photonics
Background:
- Superconducting nanowire single-photon detectors (SSPDs) offer high detection efficiency, low dark counts, and excellent time resolution, making them ideal for advanced imaging.
- Existing SSPD systems face challenges in scaling to large arrays while maintaining high performance.
Purpose of the Study:
- To propose and demonstrate a new readout scheme for large-scale SSPD imaging arrays.
- To integrate a row-column architecture with a single-flux-quantum (SFQ) digital signal processor for efficient data acquisition.
Main Methods:
- Fabrication of a 16-pixel SSPD array utilizing a row-column readout architecture.
- Integration and measurement of the SSPD array with an SFQ digital signal processor.
- Characterization of spatial and temporal photon detection information.
Main Results:
- Successful acquisition of spatial information encoded as digital bit codes.
- Preservation of temporal photon detection information through the SFQ processor.
- Measured system timing jitter of less than 80 ps across all 16 pixels.
Conclusions:
- The proposed readout scheme enables large-scale SSPD imaging arrays.
- The SFQ digital signal processor effectively processes SSPD signals while maintaining high time resolution.
- This technology holds significant potential for developing ultimate cameras with unprecedented temporal resolution.
