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arXiv · 2501.08125

Interfacing superconducting nanowire single photon detectors with cryogenic opto-electronics for quantum photonic applications

Niklas Lamberty·Frederik Thiele·Thomas Hummel·Tim J. Bartley
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Abstract

Interfacing single-photon detectors with active photonic components is a cornerstone photonic quantum technology. We describe how the output signal of commercial superconducting nanowire single-photon detectors can be used in situ to drive photonic components such as lasers and electro-optic modulators, co-located in the cryostat. This is enabled by developing custom circuitry using cryogenic-compatible discrete components in the SiGe-BiCMOS platform. We have demonstrated this with a number of experiments, in particular optical readout of an SNSPD and low-latency feed-forward modulation based on single-photon measurement events, all at or below 4 K. This manuscript is an abridged version of the Master thesis of the primary author N. Lamberty.

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Niklas Lamberty, Frederik Thiele, Thomas Hummel, Tim J. Bartley. 2025-01-14. Interfacing superconducting nanowire single photon detectors with cryogenic opto-electronics for quantum photonic applications. https://arxiv.org/abs/2501.08125

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