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npjqi (npj Quantum Information)

  • Werninghaus, M., Egger, D.J., Roy, F., Machnes, S., Wilhelm, F.K. and Filipp, S., 2021. Leakage reduction in fast superconducting qubit gates via optimal control. npj Quantum Information, 7(1), p.14. [ www ] ( CMA-ES | Continuous Optimization )
    • "We use the covariance matrix adaptation-evolution strategy (CMA-ES) algorithm instead of, for instance, Nelder-Mead to handle the large number of parameters. With these improvements we experimentally optimize pulses with up to 55 parameters."
      • Hansen, N. The CMA evolution strategy: a tutorial. hal-01297037 (2005).
  • Menke, T., Häse, F., Gustavsson, S., Kerman, A.J., Oliver, W.D. and Aspuru-Guzik, A., 2021. Automated design of superconducting circuits and its application to 4-local couplers. npj Quantum Information, 7(1), p.49. [ www ] ( PSO | Continuous Optimization )
    • "The best two of the 15,000 circuits are kept after filtering and are refined using the evolution-inspired swarm optimization module."
    • "The subsequent swarm optimization with a total of 8000 circuit evaluations in 200 iteration steps took an average of 51.2 ± 15.9 h (23.0 s/circuit)."
      • Shi, Y. & Eberhart, R. A modified particle swarm optimizer. In International Conference on Evolutionary Computation Proceedings. IEEE World Congress on Computational Intelligence. 69–73 (IEEE, 1998).
      • Eberhart, R. & Kennedy, J. A new optimizer using particle swarm theory. In Proceedings of the Sixth International Symposium on Micro Machine and Human Science, 39–43 (IEEE, 1995).
      • Miranda, L. J. V. PySwarms, a research-toolkit for particle swarm optimization in Python. J. Open Source Softw. 3, 21 (2018).