Cryogenic Reconfigurable Logic with Superconducting Heater Cryotron: Enhancing Area Efficiency and Enabling Camouflaged Processors

• DOI: 10.48550/arxiv.2306.10244
• Publication Date: 2023-01-01
• Authors: Shamiul Alam; Dana S. Rampini; Bakhrom Oripov; Adam N. McCaughan; Ahmedullah Aziz
• Keywords: AND-OR-Invert

Superconducting electronics are among the most promising alternatives to conventional CMOS technology thanks ultra-fast speed and ultra-high energy efficiency of superconducting devices. Having a cryogenic control processor is also crucial requirement for scaling existing quantum computers up thousands qubits. Despite showing outstanding efficiency, Josephson junction-based circuits suffer from several challenges such as flux trapping leading limited scalability, difficulty in driving high impedances, so on. Three-terminal cryotron devices have been proposed solve these issues which can drive impedances (>100 k{\Omega}) free any issue. In this work, we develop reconfigurable logic circuit using heater (hTron). approaches, number perform operation typically increases with inputs. However, here, demonstrate single hTron device-based that be reconfigured 1-input copy NOT, 2-input AND OR, 3-input majority operations by choosing suitable biasing conditions. Consequently, processing task much smaller Also, since different same (same layout), camouflaged system where all gates will layout. Therefore, ensure enhanced hardware security against reverse engineering attacks.