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QUASAR Ice
A 32-bit RISC-V Core with Quantum Specific Extensions
To pave the way towards future quantum accelerators adoption, we propose to define several abstraction levels throughout the entire control hardware stack that starts with comprehensive software-hardware interface - quantum instruction set architecture (QUASAR). By extending RV32/64, QUASAR supports single- and dual-qubit gates (serial or parallel application), controlled measurement, bit manipulation, arbitrary phase rotation, and advanced pulse shaping. The first extended processor (QUASAR Ice) implements a 32-bit in-order 5-stage pipeline architecture with specialized quantum accelerator interface. This basic implementation supports up-to 512 qubit addressing, fast feedback loop and parallel gate execution.
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About Berkeley Lab
Founded in 1931 on the belief that the biggest scientific challenges are best addressed by teams, Lawrence Berkeley National Laboratory and its scientists have been recognized with 16 Nobel Prizes. Today, Berkeley Lab researchers develop sustainable energy and environmental solutions, create useful new materials, advance the frontiers of computing, and probe the mysteries of life, matter, and the universe. Scientists from around the world rely on the Lab’s facilities for their own discovery science. Berkeley Lab is a multiprogram national laboratory, managed by the University of California for the U.S. Department of Energy’s Office of Science.
DOE’s Office of Science is the single largest supporter of basic research in the physical sciences in the United States, and is working to address some of the most pressing challenges of our time. For more information, please visit energy.gov/science.
