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arXiv · 1612.02228

Operation of Multi-Pixel Radio-Frequency Superconducting Nanowire Single-Photon Detector Arrays

Steffen Doerner·Artem Kuzmin·Stefan Wuensch·Ilya Charaev·Michael Siegel
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Abstract

The concept of the radio-frequency superconducting nanowire single-photon detector (RF-SNSPD) allows frequency-division multiplexing (FDM) of the bias and readout lines of several SNSPDs. Using this method, a multi-pixel array can be operated by only one feed line. Consequently, the system complexity as well as the heat load is significantly reduced. To allocate many pixels into a small bandwidth the quality factor of each device is crucial. In this paper, we present an improved RF-SNSPD design. This new design enables a simple tuning of the quality factor as well as the resonant frequency. With a two-pixel device we have demonstrated the operation without crosstalk between the detectors and showed the time, spatial and photon number resolution. Thereby a single pixel requires only a bandwidth of 14 MHz.

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Steffen Doerner, Artem Kuzmin, Stefan Wuensch, Ilya Charaev, Michael Siegel. 2016-12-07. Operation of Multi-Pixel Radio-Frequency Superconducting Nanowire Single-Photon Detector Arrays. https://doi.org/10.1109/tasc.2016.2637875

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