Mana: A monolithic adiabatic integration architecture microprocessor using 1.4-zj/op unshunted superconductor josephson junction devices

CL Ayala, T Tanaka, R Saito, M Nozoe… - IEEE Journal of Solid …, 2020 - ieeexplore.ieee.org
We conducted the first successful demonstration of an adiabatic microprocessor based on
unshunted Josephson junction (JJ) devices manufactured using a Nb/AlO x/Nb …

Adiabatic quantum-flux-parametron cell library adopting minimalist design

N Takeuchi, Y Yamanashi, N Yoshikawa - Journal of Applied Physics, 2015 - pubs.aip.org
We herein build an adiabatic quantum-flux-parametron (AQFP) cell library adopting
minimalist design and a symmetric layout. In the proposed minimalist design, every logic cell …

[HTML][HTML] Reversible logic gate using adiabatic superconducting devices

N Takeuchi, Y Yamanashi, N Yoshikawa - Scientific reports, 2014 - nature.com
Reversible computing has been studied since Rolf Landauer advanced the argument that
has come to be known as Landauer's principle. This principle states that there is no …

Energy efficiency of adiabatic superconductor logic

N Takeuchi, Y Yamanashi… - … Science and Technology, 2014 - iopscience.iop.org
Adiabatic superconductor logic (ASL), including adiabatic quantum-flux-parametron (AQFP)
logic, exhibits high energy efficiency because its bit energy can be decreased below the …

A semi-custom design methodology and environment for implementing superconductor adiabatic quantum-flux-parametron microprocessors

CL Ayala, R Saito, T Tanaka, O Chen… - Superconductor …, 2020 - iopscience.iop.org
We present a comprehensive overview of a design methodology and environment that we
developed to enable the implementation of microprocessors and other complex logic circuits …

Low-power high-speed half-flux-quantum circuits driven by low bias voltages

F Li, Y Takeshita, D Hasegawa, M Tanaka… - Superconductor …, 2021 - iopscience.iop.org
Abstract Half-flux-quantum (HFQ) circuits store and propagate half-flux quanta. The basic
circuit element is a 0-π SQUID, which is a superconducting quantum interference device …

Measurement of 10 zJ energy dissipation of adiabatic quantum-flux-parametron logic using a superconducting resonator

N Takeuchi, Y Yamanashi, N Yoshikawa - Applied Physics Letters, 2013 - pubs.aip.org
Adiabatic quantum-flux-parametron (AQFP) logic has the potential to operate with an
ultimately small bit energy of several zeptojoules; however, this is too small to measure by …

Recent developments in superconductor digital electronics technology at FLUXONICS foundry

J Kunert, O Brandel, S Linzen… - IEEE transactions on …, 2013 - ieeexplore.ieee.org
In Europe, the FLUXONICS Foundry develops fabrication processes and design kits for
superconductor digital and mixed-signal circuits. We describe the implementation of the …

CryoCore: A fast and dense processor architecture for cryogenic computing

I Byun, D Min, G Lee, S Na, J Kim - 2020 ACM/IEEE 47th …, 2020 - ieeexplore.ieee.org
Cryogenic computing can achieve high performance and power efficiency by dramatically
reducing the device's leakage power and wire resistance at low temperatures. Recent …

CryoCache: A fast, large, and cost-effective cache architecture for cryogenic computing

D Min, I Byun, GH Lee, S Na, J Kim - Proceedings of the Twenty-Fifth …, 2020 - dl.acm.org
Cryogenic computing, which is to run a computer at extremely low temperatures (eg, 77K), is
a highly promising solution to dramatically improve the computer's performance and power …