Ibaraki University's
Graduate School of Science and Engineering (Engineering)
Department of Electrical and Electronic Engineering


WADA Tatsuaki


  1. 茨城大学工学部電気電子工学科 助手 1991/04-2005/06
  2. 茨城大学工学部電気電子工学科 講師 2005/07-2008/09
  3. 茨城大学工学部電気電子工学科 准教授 2008/10/01-2015/03
  4. 茨城大学工学部電気電子工学科 教授 2015/04-Present

Academic background

  1. Shizuoka University Graduate School, Division of Materials Science Doctor course 1991 Completed

Academic degrees

  1. 工学博士 Shizuoka University 1991/03

Research Areas

  1. Mathematical Physics/Fundamental Theory of Physical Properties
  2. Fundamental Informatics

Research keywords

  1. Generalized entropy, Generalized statistical mechanics, Mathematical engineering, Quantum Condensed Matter, Information geometry, Quantum trajectory, Quantum walk

Subject of research

  1. κ-統計力学に関する情報幾何構造の解明
  2. 量子ウォークに関する研究
  3. Research on the non-linear difusion equation which is basis for the maximum principle of the kappa-generalized entropy. κエントロピー最大原理の基礎となる非線型拡散方程式とその長時間漸近解に関する研究 2007/04-2010/03
  4. 一般化エントロピーから導かれる数理構造によるベキ法則にしたがう情報構造の解明 べキ分布にしたがうデータの発生機構の解明 2006-2009
  5. Information geometry of a deformed exponential probability distribution 2012-Present

Proposed theme of joint or funded research

  1. An generalization of statistical mechanics based on \kappa-generalized entropy Joint research with other research organizations such as universities.
  2. 幾何学的代数(GA)による電気回路の解析 Joint research with other research organizations such as universities.
  3. 情報幾何と接触幾何


  1. Research paper (scientific journal) Joint Consistency of the structure of Legendre transform in thermodynamics with the Kolmogorov-Nagumo average A.M. Scarfone, H. Matsuzoe and T. Wada Phys. Lett. A 380, 3022-3028 2016
  2. Research paper (scientific journal) Joint Dualistic Hessian structure among the thermodynamic potentials in theκ-thermostatistics T. Wada, H. Matsuzoe, A.M. Scarfone Entropy 17, 7213-7229 2015
  3. Research paper (scientific journal) Joint Deformed Algebras and Generalizations of Independence on Deformed Exponential Families H. Matsuzoe and T. Wada Entropy 17, 5729-5751 2015
  4. Research paper (scientific journal) Joint Information Geometry on the κ-Thermostatistics T. Wada, A.M. Scarfone Entropy 17/ 3, 1204-1217 2015/03/12 10.3390/e17031204 We explore the information geometric structure of the statistical manifold generated by the -deformed exponential family. The dually-flat manifold is obtained as a dualistic Hessian structure by introducing suitable generalization of the Fisher metric and affine connections. As a byproduct, we obtain the fluctuation-response relations in the -formalism based on the -generalized exponential family.
  5. Research paper (scientific journal) Joint Discrete-time quantum walk with feed-forward quantum coin Yutaka Shikano, Tatsuaki Wada, Junsei Horikawa Scientific Report 4, 4427 2014/03/21 10.1038/srep04427

Research presentations

  1. Poster presentation Anomalous slow diffusion in nonlinear quantum walks Workshop of Quantum Dynamics and Quantum Walks 2012/11/24
  2. Oral presentation(general) Gauβ原理と統計集団間の等価性を満たす一般化エントロピ- 函数解析学による一般化エントロピ-の新展開 2012/11/13
  3. Poster presentation A two-parameter representation of probability distributions and the associated divergence functions International Workshop on Anomalous Statistics, Generalized Entropies, and Information Geometry (NEXT2012Nara) 2012/03/08 URL
  4. Poster presentation Legendre structure of κ-termostatistics: an information geometry approach International Workshop on Anomalous Statistics, Generalized Entropies, and Information Geometry (NEXT2012Nara) 2012/03/06 URL
  5. Poster presentation 量子反射における量子軌跡 Hierarchy in Physics through Information - It's Control and Emergence - 2012/01/06

Alloted class

  1. センサーと電子デバイス
  2. 量子凝縮系物性特論
  3. ベクトル解析と電磁気(B班)
  4. 電気電子工学実験I

Social Contribution

  1. 国際協力事業団(JICA)のポーランド日本情報工科大学への技術移転 1998/10-1998/12 JICAの短期専門家として、ポーランド日本情報工科大学において、エレクトロニクスに関する技術移転を行った。

Memberships of academic societies

  1. 日本物理学会