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Digital single-flux quantum (SFQ) technology promises to meet the demands of ultra low power and high speed computing needed for future exascale supercomputing platforms. However, clocking SFQ logic circuits remains a challenge due to the…

Superconductivity · Physics 2021-08-10 Gourav Datta , Shidie Lin , Peter A. Beerel

This letter proposes a new design of frequency-locked loop (FLL) which is based on synchronous (dq) reference frame instead of stationary ({\alpha}\b{eta}) reference frame. First, a synchronous reference frame FLL (briefly called SRF-FLL0)…

Systems and Control · Electrical Eng. & Systems 2019-09-27 Xiangjun Quan , Qinran Hu , Alex Q. Huang , Xiaobo Dou , Zaijun Wu

Cell-based design of a single-flux-quantum (SFQ) digital circuit requires input-output consistency; every output signal must be consumed only once by the input of the following component, which is a unique constraint, unlike the traditional…

Programming Languages · Computer Science 2025-02-18 Mebuki Oishi , Sun Tanaka , Shinya Takamaeda-Yamazaki

Superconductor electronics (SCE) appear promising for low energy applications. However, the achieved and projected circuit densities are insufficient for direct competition with CMOS technology. Original algorithms and nontraditional…

Superconductivity · Physics 2024-12-24 Evan B. Golden , Vasili K. Semenov , Sergey K. Tolpygo

Recent progress of Reciprocal Quantum Logic (RQL) has renewed interest in AC powering of superconductor digital circuits, which had been abandoned since the famous IBM project of 1970s. In this work we propose and demonstrate new AC-biased…

Superconductivity · Physics 2016-02-12 Vasili K. Semenov , Yuri A. Polyakov , Sergey K. Tolpygo

Conventional semiconductor-based integrated circuits are gradually approaching fundamental scaling limits. Many prospective solutions have recently emerged to supplement or replace both the technology on which basic devices are built and…

Emerging Technologies · Computer Science 2024-02-28 Gleb Krylov , Alexander J. Edwards , Joseph S. Friedman , Eby G. Friedman

Scalability of today's superconducting quantum computers is limited due to the huge costs of generating/routing microwave control pulses per qubit from room temperature. One active research area in both industry and academia is to push the…

Quantum Physics · Physics 2022-02-04 Mohammad Reza Jokar , Richard Rines , Frederic T. Chong

This work investigates the impact of time rescaling on the performance of Feedback Quantum Algorithms (FQA) and their variant for optimization tasks, FALQON. We introduce TR-FQA and TR-FALQON, time-rescaled versions of FQA and FALQON,…

Quantum Physics · Physics 2025-11-11 L. A. M. Rattighieri , G. E. L. Pexe , B. L. Bernado , F. F. Fanchini

The Single Flux Quantum (SFQ) logic family is a novel digital logic as it provides ultra-fast and energy-efficient circuits. For large-scale SFQ circuit design, specialized electronic design automation (EDA) tools are required due to the…

Emerging Technologies · Computer Science 2022-12-07 Shucheng Yang , Xiaoping Gao , Ruoting Yang , Jie Ren , Zhen Wang

Nowadays most of superconducting quantum processors use charge qubits of a transmon type. They require implementation of energy efficient qubit state control scheme. A promising approach is the use of superconducting digital circuits…

Quantum Physics · Physics 2022-09-21 M. V. Bastrakova , D. S. Kulandin , T. Laptyeva , V. A. Vozhakov , A. V. Liniov

Neural networks and neuromorphic computing play pivotal roles in deep learning and machine vision. Due to their dissipative nature and inherent limitations, traditional semiconductor-based circuits face challenges in realizing ultra-fast…

Superconductivity · Physics 2024-05-21 Sasan Razmkhah , Mustafa Altay Karamuftuoglu , Ali Bozbey

Accurate, high-performance radio-frequency (RF) filter circuits are ubiquitous in radio-frequency communication and sensing systems for accepting and rejecting signals at desired frequencies. Conventional RF filter design process involves…

Signal Processing · Electrical Eng. & Systems 2026-03-03 Nhat Tran , Chenjie Hao , Alexander Stameroff , Anh-Vu Pham , Yubei Chen

Power dissipation is known as the most notable limiting factor in all nano-electronic design techniques including Quantum-dot Cellular Automata (QCA). The familiar reversible computing approach is used as a reasonably reliable solution,…

Emerging Technologies · Computer Science 2019-12-11 Moein Sarvaghad-Moghaddam , Ali A. Orouji , Zeinab Ramezani , Iraj Sadegh Amiri , Alireza Mahdavi Nejad

It has been suggested that Rapid Single Flux Quantum (RSFQ) devices could be used as the classical interface of superconducting qubit systems. One problem is that the interface acts as a dissipative environment for a qubit. Recently ways to…

Superconductivity · Physics 2007-06-13 J. Hassel , L. Gronberg , P. Helisto

Standard cell libraries are the foundation for the entire backend design and optimization flow in modern application-specific integrated circuit designs. At 7nm technology node and beyond, standard cell library design and optimization is…

Hardware Architecture · Computer Science 2018-07-31 Xiaoqing Xu , Nishi Shah , Andrew Evans , Saurabh Sinha , Brian Cline , Greg Yeric

Emerging wireless control applications demand for extremely high closed-loop reliability under strict latency constraints, which the conventional Automatic Repeat reQuest (ARQ) solutions with static schedules fail to provide. To overcome…

Information Theory · Computer Science 2021-11-30 Bin Han , Yao Zhu , Muxia Sun , Vincenzo Sciancalepore , Yulin Hu , Hans D. Schotten

With phenomenal growth of high speed and complex computing applications, the design of low power and high speed logic circuits have created tremendous interest. Conventional computing devices are based on irreversible logic and further…

Emerging Technologies · Computer Science 2016-08-08 Vishal Pareek

Digital single-flux quantum (SFQ) technology promises to meet the demands of ultra low power and high speed computing needed for future exascale supercomputing systems. The combination of ultra high clock frequencies, gate-level pipelines,…

Emerging Technologies · Computer Science 2019-10-25 Gourav Datta , Haolin Cong , Souvik Kundu , Peter A. Beerel

Exascale computing and its associated applications have required increasing degrees of efficiency. Semiconductor-Transistor-based Circuits (STbCs) have struggled with increasing the GHz frequency while dealing with power dissipation issues.…

Logic in Computer Science · Computer Science 2023-01-26 Junyao Zhang , Paul Bogdan , Shahin Nazarian

Designing efficient quantum circuits is a central bottleneck to exploring the potential of quantum computing, particularly for noisy intermediate-scale quantum (NISQ) devices, where circuit efficiency and resilience to errors are paramount.…

Quantum Physics · Physics 2025-10-31 Jun Dai , Michael Rizvi-Martel , Guillaume Rabusseau