Adiabatic quantum-flux-parametron: A tutorial review

N Takeuchi, T Yamae, CL Ayala, H Suzuki… - IEICE Transactions …, 2022 - search.ieice.org
The adiabatic quantum-flux-parametron (AQFP) is an energy-efficient superconductor logic
element based on the quantum flux parametron. AQFP circuits can operate with energy …

Advanced fabrication processes for superconducting very large-scale integrated circuits

SK Tolpygo, V Bolkhovsky, TJ Weir… - IEEE Transactions …, 2016 - ieeexplore.ieee.org
We review the salient features of two advanced nodes of an 8-Nb-layer fully planarized
process developed recently at MIT Lincoln Laboratory for fabricating single flux quantum …

Superconductor digital electronics: Scalability and energy efficiency issues

SK Tolpygo - Low Temperature Physics, 2016 - pubs.aip.org
Superconductor digital electronics using Josephson junctions as ultrafast switches and
magnetic-flux encoding of information was proposed over 30 years ago as a sub-terahertz …

Fabrication Process and Properties of Fully-Planarized Deep-Submicron Nb/Al– Josephson Junctions for VLSI Circuits

SK Tolpygo, V Bolkhovsky, TJ Weir… - IEEE transactions on …, 2014 - ieeexplore.ieee.org
A fabrication process for Nb/Al-AlO x/Nb Josephson junctions (JJs) with sizes down to 200
nm has been developed on a 200-mm-wafer tool set typical for CMOS foundry. This process …

Advanced fabrication processes for superconductor electronics: Current status and new developments

SK Tolpygo, V Bolkhovsky, R Rastogi… - IEEE Transactions …, 2019 - ieeexplore.ieee.org
In superconductor electronics fabrication processes developed at MIT Lincoln Laboratory,
Josephson junctions (JJs) are placed near the top of the stack composed of nine or ten …

QECOOL: On-line quantum error correction with a superconducting decoder for surface code

Y Ueno, M Kondo, M Tanaka, Y Suzuki… - 2021 58th ACM/IEEE …, 2021 - ieeexplore.ieee.org
Due to the low error tolerance of a qubit, detecting and correcting errors on it is essential for
fault-tolerant quantum computing. Surface code (SC) associated with its decoding algorithm …

Adiabatic quantum-flux-parametron cell library designed using a 10 kA cm− 2 niobium fabrication process

N Takeuchi, S Nagasawa, F China… - Superconductor …, 2017 - iopscience.iop.org
Adiabatic quantum-flux-parametron (AQFP) logic is an energy-efficient superconductor logic
with zero static power consumption and very small switching energy. In this paper, we report …

SuperNPU: An extremely fast neural processing unit using superconducting logic devices

K Ishida, I Byun, I Nagaoka, K Fukumitsu… - 2020 53rd Annual …, 2020 - ieeexplore.ieee.org
Superconductor single-flux-quantum (SFQ) logic family has been recognized as a highly
promising solution for the post-Moore's era, thanks to its ultra-fast and low-power switching …

Cryogenic computing complexity program: Phase 1 introduction

MA Manheimer - IEEE Transactions on Applied …, 2015 - ieeexplore.ieee.org
The ultimate goal of the Intelligence Advanced Research Projects Activity (IARPA)'s
Cryogenic Computing Complexity (C3) program is to demonstrate a complete …

Gate-tunable critical current of the three-dimensional niobium nanobridge Josephson junction

S Yu, L Chen, Y Pan, Y Wang, D Zhang, G Wu… - Nano Letters, 2023 - ACS Publications
Recent studies have shown that the critical currents of several metallic superconducting
nanowires and Dayem bridges can be locally tuned by using a gate voltage (V g). Here, we …