Scalable Cryogenic Read-out Circuit for a Superconducting Nanowire Single-Photon Detector System

Abstract

The superconducting nanowire single photon detector (SNSPD) is a leading technology for quantum information science applications using photons, and they are finding increasing uses in photon-starved classical imaging applications. Critical detector characteristics, such as timing resolution (jitter), reset time and maximum count rate, are heavily influenced by the readout electronics that sense and amplify the photon detection signal. We describe a readout circuit for SNSPDs using commercial off-the-shelf amplifiers operating at cryogenic temperatures. Our design demonstrates a 35 ps timing resolution and a maximum count rate of over 2x10^7 counts per second while maintaining <3 mW power consumption per channel, making it suitable for a multichannel readout.

References in corpus (7)

• A strong loophole-free test of local realism
• Provably-Secure and High-Rate Quantum Key Distribution with Time-Bin Qudits
• Single-photon detectors combining ultra-high efficiency, detection-rates, and timing resolution
• A Near-Infrared 64-pixel Superconducting Nanowire Single Photon Detector Array with Integrated Multiplexed Readout
• High-efficiency WSi superconducting nanowire single-photon detectors operating at 2.5 K
• Robust and stable delay interferometers with application to $d$-dimensional time-frequency quantum key distribution
• Eight-fold signal amplification of a superconducting nanowire single-photon detector using a multiple-avalanche architecture

Cited by in corpus (10)

• Resolving photon numbers using a superconducting tapered nanowire detector
• Quantum detector tomography of superconducting nanostrip photon-number-resolving detector
• Superconducting nanowire single-photon detector with integrated impedance-matching taper
• Universal Model for the Turn-on Dynamics of Superconducting Nanowire Single-Photon Detectors
• Quantum detector tomography of a 2x2 multi-pixel array of superconducting nanowire single photon detectors
• Intrinsically-limited timing jitter in molybdenum silicide superconducting nanowire single-photon detectors
• Timing constraints imposed by classical digital control systems on photonic implementations of measurement-based quantum computing
• Multi-mode Time-delay Interferometer for Free-space Quantum Communication
• Readout of Superconducting Nanowire Single Photon Detectors through Forward Biased Optical Modulators
• High-Speed Low-Crosstalk Detection of a ${}^{171}$Yb${}^{+}$ Qubit using Superconducting Nanowire Single Photon Detectors