Single-Photon Single-Flux Coupled Detectors

Onen, Murat; Turchetti, Marco; Butters, Brenden; Bionta, Mina R.; Keathley, Phillip D.; Berggren, Karl K.

doi:10.1021/acs.nanolett.9b04440

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…Synapses based on single-photon detectors operating in conjunction with JJ circuits have been designed [31][32][33], and demonstrations of the basic principle have been accomplished [34] using thin-film constrictions in place of tunneling-barrier JJs [35]. One manifestation of such a synapse comprises a superconducting-nanowire single-photon detector in parallel with a JJ embedded in a flux-storage loop (figure 6).…”

Section: Optoelectronic Synapsesmentioning

confidence: 99%

SuperMind: a survey of the potential of superconducting electronics for neuromorphic computing

Schneider

Toomey

Rowlands

et al. 2022

Supercond. Sci. Technol.

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Neuromorphic computing is a broad field that uses biological inspiration to address computing design. It is being pursued in many hardware technologies both novel and conventional. We discuss the use of superconductive electronics for neuromorphic computing and why they are a compelling technology for the design of neuromorphic computing systems. One example is, the natural spiking behavior of Josephson junctions and the ability to transmit short voltage spikes without the resistive capacitive time constants that typically hinder spike based computing. We review the work that has been done on biologically inspired superconductive devices, circuits, and architectures and discuss the scaling potential of these demonstrations.

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Section: Optoelectronic Synapsesmentioning

confidence: 99%

SuperMind: a survey of the potential of superconducting electronics for neuromorphic computing

Schneider

Toomey

Rowlands

et al. 2022

Supercond. Sci. Technol.

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“…Several approaches to readout of SPDs [10] involve the transduction of pulses from the SPD to supercurrent using superconducting electronic circuitry. Example approaches include using circuitry based on nanowires [11] or Josephson junctions (JJs). When using JJs, it is possible to leverage superconducting quantum interference devices (SQUIDs) as sensitive flux-to-voltage transducers [12] or to make use of digital processing with single-flux-quantum circuits [13][14][15][16] or adiabatic quantum flux parametron circuits [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Monolithic integration of superconducting-nanowire single-photon detectors with Josephson junctions for scalable single-photon sensing

Khan,

Primavera,

Mirin

et al. 2024

Supercond. Sci. Technol.

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We demonstrate superconducting single-photon detectors that integrate signals locally at each pixel. This capability is realized by the monolithic integration of superconducting-nanowire single-photon detectors with Josephson electronics. The motivation is to realize superconducting sensor elements with integrating capabilities similar to their CMOS-sensor counterparts. The pixels can operate in several modes. First, we demonstrate that photons can be counted individually, with each detection event adding an identical amount of supercurrent to an integrating element. Second, we demonstrate an active gain control option, in which the signal added per detection event can be dynamically adjusted to account for variable light conditions. Additionally, the pixels can either retain signal indefinitely to record all counts incurred over an integration period, or the pixels can record a fading signal of detection events within a decay time constant. We describe additional semiconductor readout circuitry that will be used in future work to realize scalable, large-format sensor arrays of superconducting single-photon detectors compatible with CMOS array readout architectures.

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“…In the recent work by Toomey et al, the influence of resistive shunting on nanowires was discussed in detail. [12] Some superconducting devices using this quasi-Josephson effect, like the memory element, were fabricated for non-destructive readout, [13][14][15] providing the possibility of bridging the gap between nanowires and Josephson junctions.…”

Section: Introductionmentioning

confidence: 99%

Flux-to-voltage characteristic simulation of superconducting nanowire interference device*

Zhang¹,

Wang²,

Lv³

et al. 2020

Chinese Phys. B

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Inspired by recent discoveries of the quasi-Josephson effect in shunted nanowire devices, we propose a superconducting nanowire interference device in this study, which is a combination of parallel ultrathin superconducting nanowires and a shunt resistor. A simple model based on the switching effect of nanowires and fluxoid quantization effect is developed to describe the behavior of the device. The current–voltage characteristic and flux-to-voltage conversion curves are simulated and discussed to verify the feasibility. Appropriate parameters of the shunt resistor and inductor are deduced for fabricating the devices.

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Single-Photon Single-Flux Coupled Detectors

Cited by 5 publications

References 17 publications

SuperMind: a survey of the potential of superconducting electronics for neuromorphic computing

SuperMind: a survey of the potential of superconducting electronics for neuromorphic computing

Monolithic integration of superconducting-nanowire single-photon detectors with Josephson junctions for scalable single-photon sensing

Flux-to-voltage characteristic simulation of superconducting nanowire interference device*

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