September 1, 2022
National Institute of Information and Communications Technology
Keio University
Tokyo University of Science
Graduate School of Science, The University of Tokyo
Highlights
Developed a new method to find optimal quantum operation sequences for quantum computers.
The new method, based on GRAPE, systematically finds quantum operation sequences, enabling efficient task execution.
Expected to contribute to improving quantum computer performance and reducing environmental impact.
The National Institute of Information and Communications Technology (NICT, President: Hideyuki Tokuda), in collaboration with Keio University (President: Kohei M. Itoh), Tokyo University of Science (President: Masatoshi Ishikawa), and The University of Tokyo (President: Teruo Fujii), has for the first time successfully developed a method to systematically find optimal quantum operation sequences for quantum computers.
For a quantum computer to execute a task, a quantum operation sequence must be written. Until now, computer operators have written what they believed to be the optimal quantum operation sequence in their own way, based on existing methods (recipes). The newly developed method is a systematic approach that applies optimal control theory (the GRAPE algorithm) to identify the theoretically optimal sequence from among all possible quantum operation sequences.
This method is expected to become a useful tool for medium-scale quantum computers containing several tens of qubits, and it is anticipated to contribute to improving the performance of quantum computers and reducing their environmental impact in the near future.
These results were published in the American scientific journal Physical Review A on August 23, 2022.
Please see below for the full press release.