Fellows
/Senior Distinguished
Researchers
/Distinguished
Researchers

Awards

• Inoue Research Award for Young Scientists (2009)

Academic Activities

• JST PRESTO, Technological Foundation of Advanced Quantum Computing and Information Processing, Research Area Advisor (2019-)
• MITOU target program, Gate-based quantum computer division, Project manager (2019-)
• Journal of the Physical Society of Japan, Associate editor (2020-)
• Information Processing Society of Japan, The Special Interest Groups on Quantum Software, Secretary (2020-)
• The Institute of Electronics, Information and Communication Engineers, Quantum Information Technology Committee, Secretary　(2022-)
• Butsuri (The Nihon Butsuri Gakkaishi), Editor (2017-2019)

Visiting Professor

• Osaka University, Guest Lecturer (2009-2014)
• Waseda University, Adjunct Lecturer (2016)

Publications

Papers

• "Simple experimental scheme of preparing a four-photon entangled state for the teleportation-based realization of a linear optical controlled-NOT gate",
  Yuuki Tokunaga, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto,
  Phys. Rev. A 71, 030301(R) (2005)
• "Threshold quantum cryptography",
  Yuuki Tokunaga, Tatsuaki Okamoto, and Nobuyuki Imoto,
  Phys. Rev. A 71, 012314 (2005)
• "Fidelity estimation and entanglement verification for experimentally produced four-qubit cluster states",
  Yuuki Tokunaga, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto,
  Phys. Rev. A 74, 020301(R) (2006)
• "Generation of High-Fidelity Four-Photon Cluster State and Quantum-Domain Demonstration of One-Way Quantum Computing",
  Yuuki Tokunaga, Shin Kuwashiro, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto,
  Phys. Rev. Lett. 100, 210501 (2008).
• "Fault-Tolerant Topological One-Way Quantum Computation with Probabilistic Two-Qubit Gates",
  Keisuke Fujii, Yuuki Tokunaga,
  Phys. Rev. Lett. 105, 250503 (2010)
• "Error and loss tolerances of surface codes with general lattice structures",
  Keisuke Fujii, Yuuki Tokunaga,
  Phys. Rev. A 86, 020303(R) (2012)
• "Discrete Fourier-Based Correlations for Entanglement Detection",
  Ryo Namiki and Yuuki Tokunaga,
  Phys. Rev. Lett. 108, 230503 (2012)
• "Schmidt-number benchmark for genuine quantum memories and gates",
  Ryo Namiki and Yuuki Tokunaga
  Phys. Rev. A 85, 010305(R) (2012)
• "High-Fidelity Cluster State Generation for Ultracold Atoms in an Optical Lattice",
  Kensuke Inaba, Yuuki Tokunaga, Kiyoshi Tamaki, Kazuhiro Igeta, Makoto Yamashita, Phys. Rev. Lett. 112, 110501 (2014)
• "Theory of Deterministic Entanglement Generation between Remote Superconducting Atoms"
  K. Koshino, K. Inomata, Z. R. Lin, Y. Tokunaga, T. Yamamoto, and Y. Nakamura
  Phys. Rev. Applied 7, 064006 (2017)
• "Figure of merit for single-photon generation based on cavity quantum electrodynamics"
  Hayato Goto, Shota Mizukami, Yuuki Tokunaga, and Takao Aoki
  Phys. Rev. A 99, 053843 (2019)
• "Nonreciprocal microwave transmission based on Gebhard-Ruckenstein hopping",
  Shumpei Masuda, Shingo Kono, Keishi Suzuki, Yuuki Tokunaga, Yasunobu Nakamura, and Kazuki Koshino
  Phys. Rev. A 99, 013816 (2019)
• "Requirements for fault-tolerant quantum computation with cavity-QED-based atom-atom gates mediated by a photon with a finite pulse length",
  Rui Asaoka, Yuuki Tokunaga, Rina Kanamoto, Hayato Goto, and Takao Aoki,
  Phys. Rev. A 104, 043702 (2021)
• "Quantum algorithm for the calculation of transition amplitudes in hybrid tensor networks",
  Shu Kanno, Suguru Endo, Yasunari Suzuki, and Yuuki Tokunaga,
  Phys. Rev. A 104, 042424 (2021)
• "Quantum error mitigation as a universal error-minimization technique: applications from NISQ to FTQC eras",
  Yasunari Suzuki, Suguru Endo, Keisuke Fujii, and Yuuki Tokunaga,
  PRX Quantum 3, 010345 (2022)
• "Generalized quantum subspace expansion",
  Nobuyuki Yoshioka, Hideaki Hakoshima, Yuichiro Matsuzaki, Yuuki Tokunaga, Yasunari Suzuki, and Suguru Endo,
  Phys. Rev. Lett. 129, 020502 (2022)
• "Error-Mitigated Quantum Metrology via Virtual Purification",
  Kaoru Yamamoto, Suguru Endo, Hideaki Hakoshima, Yuichiro Matsuzaki, and Yuuki Tokunaga,
  Phys. Rev. Lett. 129, 250503 (2022)
• "Gaussian-wave-packet model for single-photon generation based on cavity quantum electrodynamics under adiabatic and nonadiabatic conditions",
  Takeru Utsugi, Akihisa Goban, Yuuki Tokunaga, Hayato Goto, and Takao Aoki,
  Phys. Rev. A 106, 023712 (2022)
• "Stimulated Emission of Superradiant Atoms in Waveguide Quantum Electrodynamics"
  Rui Asaoka, Julio Gea-Banacloche, Yuuki Tokunaga, and Kazuki Koshino,
  Phys. Rev. Applied 18, 064006 (2022)

Keywords

• quantum computer, quantum network, quantum information, quantum optics, fault-tolerant quantum computing

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