A superconducting nanowire binary shift register
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142601_1_5.0144686.pdf
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Checksum (MD5)
3a19dd2f9ce7d02feb77b2c4c73c8b23
Author(s)
Foster, Reed A.
Castellani, Matteo
Buzzi, Alessandro
Medeiros, Owen
Colangelo, Marco
Berggren, Karl K.
Date Issued
April 10, 2023
Publisher
AIP Publishing
Citation
Reed A. Foster, Matteo Castellani, Alessandro Buzzi, Owen Medeiros, Marco Colangelo, Karl K. Berggren; A superconducting nanowire binary shift register. Appl. Phys. Lett. 10 April 2023; 122 (15): 152601.
Version
Final published version
Abstract
We present a design for a superconducting nanowire binary shift register, which stores digital states in the form of circulating supercurrents in high-kinetic-inductance loops. Adjacent superconducting loops are connected with nanocryotrons, three-terminal electrothermal switches, and fed with an alternating two-phase clock to synchronously transfer the digital state between the loops. A two-loop serial-input shift register was fabricated with thin-film NbN and a bit error rate of less than 10−4 was achieved, when operated at a maximum clock frequency of 83 MHz and in an out-of-plane magnetic field of up to 6 mT. A shift register based on this technology offers an integrated solution for low-power readout of superconducting nanowire single photon detector arrays and is capable of interfacing directly with room-temperature electronics and operating unshielded in high magnetic field environments.
Subjects
Physics and Astronomy (miscellaneous)
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1063/5.0144685
