河内 亮周 (かわち あきのり)

東京工業大学 大学院情報理工学研究科
数理・計算科学専攻 助教


連絡先

住所
〒152-8552 東京都目黒区大岡山2-12-1
Email
kawachi_at_is_dot_titech_dot_ac_jp

授業

2009年度後期
コンピュータサイエンス入門
2009年度後期
計算機科学第一 演習

研究

研究内容の解説はこちら

計算量理論
平均計算量, 回路計算量
量子計算
量子質問計算量, 計算論的量子暗号
確率・分散計算
負荷分散問題, コンパクトルーティングアルゴリズム

書籍

著:Michael Mitzenmacher and Eli Upfal, 翻訳:小柴 健史,河内 亮周
確率と計算 ―乱択アルゴリズムと確率的解析―
共立出版,2009年 [Amazon]
   

主要論文

全論文リストはこちら(PDFファイル)

Akinori Kawachi and Tomoyuki Yamakami,
"Quantum Hardcore Functions by Complexity-Theoretical Quantum List Decoding,"
SIAM Journal on Computing, to appear. [quant-ph]
Dan Gutfreund and Akinori Kawachi,
"Derandomizing Arthur-Merlin Games and Approximate Counting Implies Exponential-Size Lower Bounds,"
Proc. CCC 2010, to appear. [ECCC]
Akinori Kawachi and Osamu Watanabe,
"Strong Hardness Preserving Reduction from a P-Samplable Distribution to the Uniform Distribution for NP-Search Problems,"
Submitted. [ECCC]
Akinori Kawachi and Christopher Portmann,
"On the Power of Quantum Encryption Keys,"
Proc. PQCrypto 2008, p.165-180, 2008. [quant-ph]
Akinori Kawachi, Keisuke Tanaka, and Keita Xagawa,
"Concurrently Secure Identification Schemes Based on the Worst-Case Hardness of Lattice Problems,"
Proc. Asiacrypt 2008, p.372-389, 2008. [full version (PDF)]
Masahito Hayashi, Akinori Kawachi, and Hirotada Kobayashi,
"Quantum Measurements for Hidden Subgroup Problems with Optimal Sample Complexity,"
Quantum Information and Computation Journal, 8, p.345-358, 2008. [quant-ph]
Akinori Kawachi, Keisuke Tanaka, and Keita Xagawa,
"Multi-Bit Cryptosystems Based on Lattice Problems,"
Proc. PKC 2007, LNCS 4450, p.315-329, 2007. [full version (PDF)]
Akinori Kawachi, Hirotada Kobayashi, Takeshi Koshiba, and Raymond H. Putra,
"Universal Test for Quantum One-Way Permutations,"
Theoretical Computer Science, 345:2-3, p.370-385, 2005. [quant-ph]
Akinori Kawachi, Takeshi Koshiba, Harumichi Nishimura, and Tomoyuki Yamakami,
"Computational Indistinguishability between Quantum States and Its Cryptographic Application,"
Proc. EUROCRYPT 2005, LNCS 3494, p.268-284, 2005. [quant-ph]
Andris Ambainis, Kazuo Iwama, Akinori Kawachi, Hiroyuki Masuda, Raymond H. Putra, and Shigeru Yamashita,
"Quantum Identification of Boolean Oracles,"
Proc. STACS 2004, LNCS 2996, p.105-116, 2004. [quant-ph]