Multiplexed readout of Superconductor--Normal-Conductor--Superconductor bolometers Article Swipe

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Priyank Singh , András Gunyhó , Heikki Suominen , Giacomo Catto , Florian Blanchet , Qiming Chen , Arman Alizadeh , Aarne Keränen , Jian Ma , Timm Mörstedt , Wei Liu , Mikko Möttonen ·

YOU? · · 2024 · Open Access · · DOI: https://doi.org/10.48550/arxiv.2411.12782

Recently, ultrasensitive calorimeters have been proposed as a resource-efficient solution for multiplexed qubit readout in superconducting large-scale quantum processors. However, experiments demonstrating frequency multiplexing of these superconductor--normal--conductor--superconductor (SNS) sensors are are lacking in the literature. To this end, we present the design, fabrication, and operation of three SNS sensors with frequency-multiplexed input and probe circuits, all on a single chip. These devices have their probe frequencies in the range 150 MHz--200 MHz, which is well detuned from the heater frequencies of 4.4 GHz--7.6 GHz compatible with typical readout frequencies of superconducting qubits. Importantly, we show on-demand triggering of both individual and multiple low-noise SNS bolometers with very low cross talk. These experiments pave the way for multiplexed bolometric characterization and calorimetric readout of multiple qubits, a promising step in minimizing related resources such as the number of readout lines and microwave isolators in large-scale superconducting quantum computers.

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Bolometer Multiplexing Optoelectronics Nanotechnology Materials science Computer science Physics Detector Optics Telecommunications

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Type: preprint
Language: en
Landing Page: http://arxiv.org/abs/2411.12782
PDF: https://arxiv.org/pdf/2411.12782
OA Status: green
Cited By: 1
Related Works: 10
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DOI: https://doi.org/10.48550/arxiv.2411.12782

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Title: Multiplexed readout of Superconductor--Normal-Conductor--Superconductor bolometers

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Language: en

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Publication year: 2024

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Publication date: 2024-11-19

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Authors: Priyank Singh, András Gunyhó, Heikki Suominen, Giacomo Catto, Florian Blanchet, Qiming Chen, Arman Alizadeh, Aarne Keränen, Jian Ma, Timm Mörstedt, Wei Liu, Mikko Möttonen

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Landing page: https://arxiv.org/abs/2411.12782

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PDF URL: https://arxiv.org/pdf/2411.12782

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Concepts: Bolometer, Multiplexing, Optoelectronics, Nanotechnology, Materials science, Computer science, Physics, Detector, Optics, Telecommunications

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Cited by: 1

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