Optical bias and cryogenic laser readout of a multipixel superconducting nanowire single photon detector

• DOI: 10.1063/5.0209458
• Publication Date: 2024-07-25T14:16:08Z
• Authors: Frederik Thiele; Niklas Lamberty; Thomas Hummel; Tim Bartley
• Keywords: Photodiode; Biasing; Photon Counting; SIGNAL (programming language)

Cryogenic opto-electronic interconnects are gaining increasing interest as a means to control and readout cryogenic electronic components. The challenge is achieve sufficient signal integrity with low heat load processing. In this context, we demonstrate the bias of commercial four-pixel superconducting nanowire single-photon detector array using photodiode laser. We show that approach has similar system detection efficiency conventional bias. Furthermore, multi-pixel events faithfully converted between optical electrical domains, which allows reliable extraction amplitude multiplexed photon statistics. Our device latent 2.6 mW, maintains rise time 3 ns, operates in free-running (self-resetting) mode at repetition rate 600 kHz. This demonstrates potential high-bandwidth, noise, for scalable processing transmission.