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Characterizing and modeling the influence of geometry on the performance of superconducting nanowire cryotrons

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Title: Characterizing and modeling the influence of geometry on the performance of superconducting nanowire cryotrons
Authors: Simon, Alejandro, Foster, Reed, Medeiros, Owen, Castellani, Matteo, Batson, Emma, Berggren, Karl K.
Publication Year: 2024
Collection: Condensed Matter
Physics (Other)
Subject Terms: Condensed Matter - Superconductivity, Physics - Applied Physics
More Details: The scaling of superconducting nanowire-based devices to larger arrays is often limited by the cabling required to interface with each device. Cryogenic integrated circuits constructed from nanowire cryotrons, or nanocryotrons, can address this limitation by performing signal processing on chip. In this study, we characterize key performance metrics of the nanocryotron to elucidate its potential as a logical element in cryogenic integrated circuits and develop an electro-thermal model to connect material parameters with device performance. We find that the performance of the nanocryotron depends significantly on the device geometry, and trade-offs are associated with optimizing the gain, jitter, and energy dissipation. We demonstrate that nanocryotrons fabricated on niobium nitride can achieve a grey zone less than 210 nA wide for a 5 ns long input pulse corresponding to a maximum achievable gain of 48 dB, an energy dissipation of less than 20 aJ per operation, and a jitter of less than 60 ps.
Comment: 5 pages, 5 figures
Document Type: Working Paper
Access URL: http://arxiv.org/abs/2409.17366
Accession Number: edsarx.2409.17366
Database: arXiv
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  Data: Characterizing and modeling the influence of geometry on the performance of superconducting nanowire cryotrons
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  Data: <searchLink fieldCode="AR" term="%22Simon%2C+Alejandro%22">Simon, Alejandro</searchLink><br /><searchLink fieldCode="AR" term="%22Foster%2C+Reed%22">Foster, Reed</searchLink><br /><searchLink fieldCode="AR" term="%22Medeiros%2C+Owen%22">Medeiros, Owen</searchLink><br /><searchLink fieldCode="AR" term="%22Castellani%2C+Matteo%22">Castellani, Matteo</searchLink><br /><searchLink fieldCode="AR" term="%22Batson%2C+Emma%22">Batson, Emma</searchLink><br /><searchLink fieldCode="AR" term="%22Berggren%2C+Karl+K%2E%22">Berggren, Karl K.</searchLink>
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  Data: 2024
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  Data: Condensed Matter<br />Physics (Other)
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  Data: The scaling of superconducting nanowire-based devices to larger arrays is often limited by the cabling required to interface with each device. Cryogenic integrated circuits constructed from nanowire cryotrons, or nanocryotrons, can address this limitation by performing signal processing on chip. In this study, we characterize key performance metrics of the nanocryotron to elucidate its potential as a logical element in cryogenic integrated circuits and develop an electro-thermal model to connect material parameters with device performance. We find that the performance of the nanocryotron depends significantly on the device geometry, and trade-offs are associated with optimizing the gain, jitter, and energy dissipation. We demonstrate that nanocryotrons fabricated on niobium nitride can achieve a grey zone less than 210 nA wide for a 5 ns long input pulse corresponding to a maximum achievable gain of 48 dB, an energy dissipation of less than 20 aJ per operation, and a jitter of less than 60 ps.<br />Comment: 5 pages, 5 figures
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      – SubjectFull: Condensed Matter - Superconductivity
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      – SubjectFull: Physics - Applied Physics
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      – TitleFull: Characterizing and modeling the influence of geometry on the performance of superconducting nanowire cryotrons
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