A superconducting nanowire binary shift register

Foster, Reed A.; Castellani, Matteo; Buzzi, Alessandro; Medeiros, Owen; Colangelo, Marco; Berggren, Karl K.

doi:10.1063/5.0144685

A superconducting nanowire binary shift register

Journal Article · Mon Apr 10 00:00:00 EDT 2023 · Applied Physics Letters

DOI:https://doi.org/10.1063/5.0144685· OSTI ID:2202277

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Massachusetts Institute of Technology (MIT), Cambridge, MA (United States); Massachusetts Institute of Technology
Massachusetts Institute of Technology (MIT), Cambridge, MA (United States)

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.

View Accepted Manuscript (DOE)

Research Organization:: Massachusetts Institute of Technology (MIT), Cambridge, MA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 2202277

Alternate ID(s):: OSTI ID: 1969146

Journal Information:: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 15 Vol. 122; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

References (16)

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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
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Magnetic fields
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Nanowires
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Superconducting devices
Superconductors
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A superconducting nanowire binary shift register

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