GOMACTech 2020

Also, make sure to mark your calendars for Synopsys' postered sessions:

Thursday, March 19 / 10:30-11:50 AM / Grand Ballroom

P9.3 Synopsys’ Journey to Enable TCAD and EDA Tools for Superconducting Electronics

Robert Freeman, Jamil Kawa, Kishore Singhal
Synopsys, Inc - Mountain View, CA USA

As part of the IARPA sponsored SuperTools program, Synopsys is collaborating with industry and academia experts in the field of low temperature, high performance, and energy efficient Superconducting Electronics (SCE) to develop a comprehensive set of physics based Technology Computer Aided Design (TCAD) and Electronic Design Automation (EDA) tools that enable the automation of digital SCE designs, thereby increasing the integration scale, efficiency, and manufacturability of these designs. SCE technology has the potential to propel the Electronics Industry beyond CMOS, enabling a major leap in processing speeds and power efficiency, advancing high-end computing applications, low noise sensors, high-speed communication links, and control logic and interfaces for Quantum Computing systems. I will describe the current state of the project targeting the SFQ5ee fabrication process at MIT Lincoln Laboratory, highlight current tools capabilities, and discuss Synopsys’ development plans for Phase 2.

P9.4 Resonance Effects in Single Flux Quantum Interconnect

Tahereh Jabbari, Eby G. Friedman
University of Rochester - Rochester, NY USA

Gleb Krylov
University of Rochester - Rochester, NY USA

Stephen Whiteley, Jamil Kawa
Synopsys, Inc. - Mountain View, CA USA

Superconductive microstrip passive transmission lines (PTL) are widely used in large scale RSFQ circuits. Due to imperfect matching between the driver and receiver, a resonance behavior occurs in microstrip lines when the roundtrip time of the reflections coincides with the clock period of the signal. This resonant effect is related to certain characteristics of the line such as the phase velocity and clock frequency of the signal. A methodology to reduce this effect is the focus of this paper. A closed-form expression describing the dependence of the resonance frequency on the length of the PTL is presented. This expression describes a set of forbidden lengths for PTL interconnect segments in RSFQ circuits. The methodology inserts superconductive repeaters into a PTL interconnect and determines the length of the resulting segments while decreasing the area, power, and delay, and increasing the margins.