Driving Fully-Adiabatic Logic Circuits Using Custom High-Q MEMS Resonators

To perform digital logic in CMOS in a truly adiabatic (asymptotically thermodynamically reversible) fashion requires that logic transitions be driven by a quasitrapezoidal (flat-topped) power-clock voltage waveform, which must be generated by a resonant element with a very high Q (quality factor). Recently, MEMS resonators have attained very high frequencies and Q factors, and are becoming widely used in communications SoCs for RF signal filtering, amplification, etc. In the ADIAMEMS project at the University of Florida, we are designing custom MEMS resonators for driving fully-adiabatic pipelined logic based on the 2LAL (two-level adiabatic logic) family previously developed at UF. The resonator design is being optimized to maximize its effective Q factor and area efficiency, at a frequency chosen to maximize the powerperformance advantage of the adiabatic logic. Our analyses indicate that the adiabatic approach will eventually lead to orders-of-magnitude improvements in power-performance and even cost-performance, compared to competing approaches, for all power-limited applications. As competitive pressures drive down device costs, power dissipation will increasingly become the limiting factor on performance for most computing applications, and the advantages of the adiabatic approach will become ever greater

Understanding Quantum Technologies 2022

Understanding Quantum Technologies 2022 is a creative-commons ebook that provides a unique 360 degrees overview of quantum technologies from science and technology to geopolitical and societal issues. It covers quantum physics history, quantum physics 101, gate-based quantum computing, quantum computing engineering (including quantum error corrections and quantum computing energetics), quantum computing hardware (all qubit types, including quantum annealing and quantum simulation paradigms, history, science, research, implementation and vendors), quantum enabling technologies (cryogenics, control electronics, photonics, components fabs, raw materials), quantum computing algorithms, software development tools and use cases, unconventional computing (potential alternatives to quantum and classical computing), quantum telecommunications and cryptography, quantum sensing, quantum technologies around the world, quantum technologies societal impact and even quantum fake sciences. The main audience are computer science engineers, developers and IT specialists as well as quantum scientists and students who want to acquire a global view of how quantum technologies work, and particularly quantum computing. This version is an extensive update to the 2021 edition published in October 2021.Comment: 1132 pages, 920 figures, Letter forma