New Method to Systematically Find Optimal Quantum Operation Sequences for Quantum Computers Developed
September 2, 2022
National Institute of Information and Communications Technology Keio University Tokyo University of Science School of Science, The University of Tokyo
Highlights ■ Developed a new method for finding optimal quantum operation sequences for quantum computers ■ Based on GRAPE, the new method systematically finds quantum operation sequences and enables efficient task execution ■ Expected to contribute to improving the performance of quantum computers and reducing environmental impact
Abstract The National Institute of Information and Communications Technology (NICT, President: TOKUDA Hideyuki, Ph.D.), Keio University (President: ITOH Kohei, Ph.D.), Tokyo University of Science (President: Dr. ISHIKAWA Masatoshi), The University of Tokyo (President: Dr. FUJII Teruo), succeeded for the first time in developing a method for systematically finding the optimal quantum operation sequence for a quantum computer.
In order for a quantum computer to perform a task, we need to write a sequence of quantum operations. Until now, computer operators have written their own quantum operation sequences based on existing methods (recipes). What we have developed this time is a systematic method that applies optimal control theory (GRAPE algorithm) to identify the theoretically optimal sequence from among all conceivable quantum operation sequences.
This method is expected to become a useful tool for medium-scale quantum computers and is expected to contribute to improving the performance of quantum computers and reducing environmental impact in the near future.
This result was published in the American scientific journal "Physical Review A" on August 23, 2022.
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