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研究員 / 田中 宗

田中 宗

  • 博士(理学)
  • 早稲田大学高等研究所 助教

Monthly Spotlight[Monthly Spotlihgt]は研究員にスポットをあて、研究内容とそのビジョンを毎月紹介していくコンテンツです。

研究テーマ

近年、量子情報処理に対する期待が高まっている。本研究では、量子情報処理技術の現実的な設計、量子情報処理性能の向上、更には新しいタイプの量子情報処理手法の提案を目指す。確固たる理論体系が構築されている統計力学理論及び、大規模数値計算を併用して、革新的量子情報処理の展開を推進する。

略歴

2008 東京大学大学院理学系研究科物理学専攻 博士(理学)取得
2009-2010 東京大学物性研究所 特任研究員
2010-2011 近畿大学総合理工学研究科量子コンピュータ研究センター 博士研究員
2011-2014 日本学術振興会 特別研究員PD(東京大学)
2014-2015 京都大学基礎物理学研究所 基研特任助教
2015- 早稲田大学高等研究所 助教

研究項目

  • 統計物理学
  • 量子情報科学
  • 量子アニーリング

主な研究業績

(査読あり論文)
  1. Shu Tanaka and Seiji Miyashita, "Dynamical Properties of Temperature Chaos and Memory Effect", Progress of Theoretical Physics Supplement, Vol. 157, pp. 34-37 (2005).

  2. 田中宗, 「フラストレートスピン系におけるリエントラント転移の動的特性」, 物性研究, Vol. 85-4, pp. 523- (2006).

  3. Shu Tanaka, Hosho Katsura, and Naoto Nagaosa, "Electron Localization or delocalization in incommensurate Helical Magnets", Physical Review Letters, Vol. 97, pp. 116404-1-4 (2006).

  4. Shu Tanaka and Seiji Miyashita, "Quantum Annealing Effect on Entropic Slowing Down in Frustrated Decorated Bond System", Journal of magnetism and magnetic materials, Vol.310, pp. e468-e470 (2007).

  5. Shu Tanaka and Seiji Miyashita, "Slow Relaxation Process in Ising like Heisenberg Kagome Antiferromagnets due to Macroscopic Degeneracy in the Ordered State", Journal of Physics: Condensed Matter, Vol. 19, pp. 145256-1-5 (2007).

  6. Seiji Miyashita, Shu Tanaka, and Masaki Hirano, "Non-monotonic Relaxation in Systems with Reentrant Type Interaction", Journal of the Physical Society of Japan, Vol. 76 pp. 083001-1-4 (2007).

  7. Shu Tanaka and Seiji Miyashita, "Slow Relaxation of Spin Structure in Exotic Ferromagnetic Phase of Ising-like Heisenberg Kagome Antiferromagnets", Journal of the Physical Society of Japan, Vol. 76 pp. 103001-1-4 (2007).

  8. Seiji Miyashita, Shu Tanaka, Hans De Raedt, and Bernard Barbara, "Quantum response to time-dependent external field", Journal of Physics: Conference Series, Vol. 143, pp. 012005-1-10 (2009).

  9. Kenichi Kurihara, Shu Tanaka, and Seiji Miyashita, "Quantum Annealing for Clustering", Proceedings of The 25th Conference on Uncertainty in Artificial Intelligence (UAI2009).

  10. Issei Sato, Kenichi Kurihara, Shu Tanaka, Hiroshi Nakagawa, and Seiji Miyashita, "Quantum Annealing for Variational Bayes Inference", Proceedings of The 25th Conference on Uncertainty in Artificial Intelligence (UAI2009).

  11. Shu Tanaka and Seiji Miyashita, "Mechanism of Slow Relaxation due to Screening Effect in a Frustrated System", Journal of the Physical Society of Japan Vol. 78, pp. 084002-1-7 (2009).

  12. Shu Tanaka and Seiji Miyashita, "Non-monotonic Dynamics in Frustrated Ising Model with Time-Dependent Transverse Field", Physical Review E, Vol. 81 pp. 051138-1-8 (2010).

  13. Hosho Katsura, Naoki Kawashima, Anatol N. Kirillov, Vladimir E. Korepin, and Shu Tanaka, "Entanglement in Valence-Bond-Solid States on Symmetric Graphs", Journal of Physics A, Vol. 43, pp. 255303-1-28 (2010).

  14. Ryo Tamura, Shu Tanaka, and Naoki Kawashima, "Phase Transition in Potts Model with Invisible States", Progress of Theoretical Physics, Vol. 124, pp. 381-387, (2010).

  15. Shu Tanaka, Masaki Hirano, and Seiji Miyashita, "Quantum Field Induced Orderings in Fully Frustrated Ising Spin Systems", Physica E Vol. 43 pp. 766-768 (2011).

  16. Mohammad Ali Fasihi, Shu Tanaka, Mikio Nakahara, and Yasushi Kondo, "Hamiltonian Determination with Restricted Access in Transverse Field Ising Chain", Journal of the Physical Society of Japan Vol. 80, pp. 044002-1-7 (2011).

  17. Rieko Ishii, Shu Tanaka, Keisuke Onuma, Yusuke Nambu, Masashi Tokunaga, Toshiro Sakakibara, Naoki Kawashima, Yoshiteru Maeno, Collin Broholm, Dixie P. Gartreaux, Julia Y. Chan and Satoru Nakatsuji, "Successive phase transitions and phase diagrams of the quasi-two-dimensional triangular antiferromagnet Rb4Mn(MoO4)3" Europhysics Letters Vol. 94 pp. 17001-1-5 (2011).

  18. Shu Tanaka, Ryo Tamura, and Naoki Kawashima, "Phase Transition of Generalized Ferromagnetic Potts Model -- Effect of Invisible States --", Journal of Physics: Conference Series Vol. 297 pp. 012022-1-7 (2011).

  19. Shu Tanaka and Ryo Tamura, "Dynamic Properties of Potts Model with Invisible States", Journal of Physics: Conference Series Vol. 320 pp. 012025-1-6 (2011).

  20. Yutaka Shikano and Shu Tanaka, "Estimation of Spin-Spin Interaction by Weak Measurement Scheme", Europhysics Letters Vol. 96 pp. 40002-1-6 (2011).

  21. Jie Lou, Shu Tanaka, Hosho Katsura, and Naoki Kawashima, "Entanglement spectra of the two-dimensional Affleck-Kennedy-Lieb-Tasaki model: Correspondence between the valence-bond-solid state and conformal field theory", Physical Review B Vol. 84 pp. 245128-1-9 (2011).

  22. Shu Tanaka, Ryo Tamura, and Hosho Katsura, "Entanglement Spectra of the quantum hard-square model: Holographic minimal models", Physical Review A Vol. 86, pp. 032326-1-9 (2012).

  23. Daisuke Takahashi, Koji Nakabayashi, Shu Tanaka, and Shin-ichi Ohkoshi, "Two-dimensional octacyano-bridged Mn(II)-Nb(IV) bimetal assembly with four different configurations of 3-hydroxypyridines", Inorganic Chemistry Communications Vol. 27, pp. 47-50 (2013).

  24. Shu Tanaka and Ryo Tamura, "Network-Growth Rule Dependence of Fractal Dimension of Percolation Cluster on Square Lattice", Journal of the Physical Society of Japan Vol. 82, pp. 053002-1-5 (2013).

  25. Issei Sato, Shu Tanaka, Kenichi Kurihara, Seiji Miyashita, and Hiroshi Nakagawa, "Quantum Annealing for Dirichlet Process Mixture Models with Applications to Network Clustering", Neurocomputing Vol. 121, pp. 523-531 (2013).

  26. Ryo Tamura, Shu Tanaka, and Naoki Kawashima, "Second-Order Phase Transition in Heisenberg Model on Triangular Lattice with Competing Interactions", Physical Review B Vol. 87, pp. 214401-1-5 (2013).

  27. Shu Tanaka, "A useful way to obtain the central charge of entanglement Hamiltonian -- Nested entanglement entropy --", accepted for publication in Interdisciplinary Information Sciences Vol. 19, pp. 101-105 (2013).

  28. Ryo Tamura and Shu Tanaka, “Interlayer-Interaction Dependence of Latent Heat in the Heisenberg Model on a Stacked Triangular Lattice with Competing Interactions”, Physical Review E Vol. 88, pp. 052138-1-9 (2013).

  29. Ryo Tamura, Shu Tanaka, and Naoki Kawashima, “Phase Transitions with Discrete Symmetry Breaking in Antiferromagnetic Heisenberg Models on a Triangular Lattice”, JPS Conference Proceedings Vol. 1, pp.012125-1-5 (2014).

  30. Ryo Tamura, Shu Tanaka, Takahisa Ohno, and Hideaki Kitazawa, “Magnetic ordered structure dependence of magnetic refrigeration efficiency”, Journal of Applied Physics, Vol. 116, 053908-1-13 (2014).

  31. Kenji Tanaka, Tomomichi Nasu, Yasuto Miyamoto, Noriaki Ozaki, Shu Tanaka, Toshiaki Nagata, Fumiyoshi Hakoe, Marie Yoshikiyo, Kosuke Nakagawa, Yoshikazu Umeta, Kenta Imoto, Hiroko Tokoro, Asuka Namai, and Shin-ichi Ohkoshi, Structural phase transition between γ-Ti3O5 and δ-Ti3O5 by breaking of one-dimensionally conducting pathway, Crystal Growth and Design, Vol. 15, pp. 653-657 (2015).

(解説記事)
  1. 田中宗、轟木義一, 「フラストレーションと相転移」, 熱測定, Vol. 36-2, pp. 91-97 (2009).

(著書)
  1. Shu Tanaka, Masaki Hirano, and Seiji Miyashita, "Roles of Quantum Fluctuation in Frustrated Systems -- Order by Disorder and Reentrant Phase Transition --", Lecture Note in Physics (Springer), Vol. 802, pp. 215-234 (2010).

  2. Shu Tanaka and Ryo Tamura, "Quantum Annealing from the Viewpoint of Statistical Physics, Condensed Matter Physics, and Computational Physics", Kinki University Series on Quantum Computing Series "Lectures on Quantum Computing, Thermodynamics and Statistical Physics" (World Scientific), Vol.8, pp. 3-59 (2012).

所属学会

日本物理学会

受賞

2008 東京大学大学院理学系研究科 研究奨励賞(博士)
2014 第18回リバネス研究費ディスカヴァー・トゥエンティワン賞大賞
2014 物性研究所計算物質科学研究センター 第4回シンポジウム・物性研スーパーコンピュータ共同利用報告会 ポスター賞
2015 第9回日本物理学会若手奨励賞(領域11)

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