A Cryogenic Artificial Synapse based on Superconducting Memristor

Islam, Md Mazharul; Alam, Shamiul; Udoy, Md Rahatul Islam; Hossain, Md. Shafayat; Aziz, Ahmedullah

doi:10.1145/3583781.3590203

Cited by 5 publications

(1 citation statement)

References 48 publications

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“…Recently, many efforts have been dedicated to finding systems in which superconducting memristive effects can be controlled. Most studies focus on conductance-asymmetric superconducting quantuminterference devices (CA SQUID) [19,55,56] and hybrid superconducting/ferromagnetic structures [57]. As compared to those approaches, the present device exhibits an easier fabrication process, does not require the use of magnetic materials, and provides an alternative mechanism leading to analog resistance switching effects.…”

Section: Discussionmentioning

confidence: 99%

Memristive effects in YBa₂Cu₃O_7-x devices with transistor-like structure

Lagarrigue,

de Dios,

Carreira

et al. 2024

Supercond. Sci. Technol.

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Cuprate superconductors are highly sensitive to disorder and oxygen stoichiometry; even minute variations of those parameters drastically change their electronic properties. Here we exploit this characteristic to engineer a memristive device based on the high-TC superconductor YBa2Cu3O7-x (YBCO), in which local changes of the oxygen content and induced disorder are exploited to produce memory effects. These effects are triggered electrically in a three-terminal device whose structure is reminiscent of a transistor, consisting of a YBCO channel and an Al gate. The Al/YBCO interface, which controls the gate conductance, displays a giant, bipolar, reversible switching across a continuum of non-volatile conductance states spanning over two decades. This phenomenon is controlled by the gate voltage magnitude and is caused by the oxygen exchange between YBCO and Al. Concomitantly, the channel shows a gradual, irreversible superconductor-to-insulator transition that retains a memory of the power dissipated in the device, and can be explained by induced bulk disorder. The observed effects, and the understanding of the interplay between the underlying mechanisms, constitute interesting ingredients for the design and realization of novel memristors and switches for superconducting electronics.

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Section: Discussionmentioning

confidence: 99%

Memristive effects in YBa₂Cu₃O_7-x devices with transistor-like structure

Lagarrigue,

de Dios,

Carreira

et al. 2024

Supercond. Sci. Technol.

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Cryogenic reconfigurable logic with superconducting heater cryotron: Enhancing area efficiency and enabling camouflaged processors

Alam,

Rampini,

Oripov

et al. 2023

Applied Physics Letters

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Superconducting electronics are among the most promising alternatives to conventional CMOS technology, thanks to the ultra-fast speed and ultra-high energy efficiency of the superconducting devices. Having a cryogenic control processor is also a crucial requirement for scaling the existing quantum computers up to thousands of qubits. Despite showing outstanding speed and energy efficiency, Josephson junction-based circuits suffer from several challenges such as flux trapping leading to limited scalability, difficulty in driving high impedances, and so on. Three-terminal cryotron devices have been proposed to solve these issues, which can drive high impedances (>100 kΩ) and are free from any flux trapping issue. In this work, we develop a reconfigurable logic circuit using a heater cryotron (hTron). In conventional approaches, the number of devices to perform a logic operation typically increases with the number of inputs. However, here, we demonstrate a single hTron device-based logic circuit that can be reconfigured to perform 1-input copy and NOT, 2-input AND and OR, and 3-input majority logic operations by choosing suitable biasing conditions. Consequently, we can perform any processing task with a much smaller number of devices. Also, since we can perform different logic operations with the same circuit (same layout), we can develop a camouflaged system where all the logic gates will have the same layout. Therefore, this proposed circuit will ensure enhanced hardware security against reverse engineering attacks.

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Sub-Micron Binary HyperPixel Sensor Circuit: In-Pixel Binarization with Variable Thresholding

Udoy,

Islam,

Jaiswal

et al. 2024

2024 IEEE Computer Society Annual Symposium on VLSI (ISVLSI)

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A Cryogenic Artificial Synapse based on Superconducting Memristor

Cited by 5 publications

References 48 publications

Memristive effects in YBa₂Cu₃O_7-x devices with transistor-like structure

Memristive effects in YBa₂Cu₃O_7-x devices with transistor-like structure

Cryogenic reconfigurable logic with superconducting heater cryotron: Enhancing area efficiency and enabling camouflaged processors

Sub-Micron Binary HyperPixel Sensor Circuit: In-Pixel Binarization with Variable Thresholding

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A Cryogenic Artificial Synapse based on Superconducting Memristor

Cited by 5 publications

References 48 publications

Memristive effects in YBa2Cu3O7-x devices with transistor-like structure

Memristive effects in YBa2Cu3O7-x devices with transistor-like structure

Cryogenic reconfigurable logic with superconducting heater cryotron: Enhancing area efficiency and enabling camouflaged processors

Sub-Micron Binary HyperPixel Sensor Circuit: In-Pixel Binarization with Variable Thresholding

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Memristive effects in YBa₂Cu₃O_7-x devices with transistor-like structure

Memristive effects in YBa₂Cu₃O_7-x devices with transistor-like structure