Superconducting electronics are a key enabler of scalable quantum and cryogenic-classical systems, offering unparalleled speed, energy efficiency, and low-noise performance. Single Flux Quantum (SFQ) logic and cryogenic integrated circuits are capable of providing high-fidelity control and readout infrastructure essential for quantum information processing.
To support rapid development and testing of superconducting ICs and multi-chip modules, Hypres developed the Integrated Cryogenic Electronics Testbed (ICE-T), a cryogen-free, modular platform for high-throughput electrical characterization at 4 K. The ICE-T offers variable-temperature testing, automated cooldown/warmup cycles, and repeated defluxing, ideal for margin characterization, bias optimization, and validation of complex SFQ and mixed-signal designs under realistic system conditions.
Recent advancements at Hypres include energy-efficient RSFQ (ERSFQ) circuits operating up to 50 GHz, a time-to-digital converter running at up to 40 GHz, and improved reliability of SFQ circuits through refined designs of Josephson balanced comparators. Serial biasing techniques have been developed to reduce power delivery overhead while supporting electronic design automation (EDA) of RSFQ/ERSFQ circuits. Combined with high-speed cryogenic data links delivering 120 Gbps combined throughput, with on-chip drivers, optimized cables, room-temperature amplifiers, and FPGA-based acquisition, these technologies support scalable quantum-classical hybrid architectures.