Superconductor digital frequency divider operating up to 750 GHz

作者：W. Chen, Alexander V. Rylyakov, Vijay Patel, James E. Lukens, K. K. Likharev · 发表于：Applied Physics Letters · 年份：1998 · DOI：10.1063/1.122600 · 被引用次数：104 · 研究领域：Physics of Superconductivity and Magnetism、Advanced Electrical Measurement Techniques、Quantum and electron transport phenomena

A superconductor frequency divider based on rapid single flux quantum (RSFQ) logic has been demonstrated to operate from dc to 750 GHz with an error rate less than the measurement limit (25 MHz). This high operating frequency is made possible by the use of small (0.25 μm2), high critical current density Josephson junctions along with an optimized design having parameter margins of ±30%. Simulations based on the Werthamer model are in reasonable agreement with the data and give a SFQ pulse width of 1 ps and a maximum power dissipation of 1.5 μW.