Quantum (Oct 2021)

Qulacs: a fast and versatile quantum circuit simulator for research purpose

  • Yasunari Suzuki,
  • Yoshiaki Kawase,
  • Yuya Masumura,
  • Yuria Hiraga,
  • Masahiro Nakadai,
  • Jiabao Chen,
  • Ken M. Nakanishi,
  • Kosuke Mitarai,
  • Ryosuke Imai,
  • Shiro Tamiya,
  • Takahiro Yamamoto,
  • Tennin Yan,
  • Toru Kawakubo,
  • Yuya O. Nakagawa,
  • Yohei Ibe,
  • Youyuan Zhang,
  • Hirotsugu Yamashita,
  • Hikaru Yoshimura,
  • Akihiro Hayashi,
  • Keisuke Fujii

DOI
https://doi.org/10.22331/q-2021-10-06-559
Journal volume & issue
Vol. 5
p. 559

Abstract

Read online

To explore the possibilities of a near-term intermediate-scale quantum algorithm and long-term fault-tolerant quantum computing, a fast and versatile quantum circuit simulator is needed. Here, we introduce Qulacs, a fast simulator for quantum circuits intended for research purpose. We show the main concepts of Qulacs, explain how to use its features via examples, describe numerical techniques to speed-up simulation, and demonstrate its performance with numerical benchmarks.