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Name: Seiya OKUBO Affiliations: 2006-2008 Postdoctoral researcher (COE), Department of Information and Communication Engineering, Graduate School of Electro-Communications, The University of Electro-Communications 2008- Research Associate, School of Management & Information, Univ. of Shizuoka Research Interests: Qauntum Computation, Quantum Algorithm

Publications

Paper

• Nobuaki MUTOH, Kazumi SAITO, Seiya OKUBO, Tetsuo IKEDA:
  ``Facility Location Problem based on Random Walk Model'',
  DBSJ Journal, Vol.12 , No.1 , pp.1--6 (2013), in Japanese.
• Masaki MITSUYAMA, Kazumi SAITO, Tetsuo IKEDA, Seiya OKUBO, Nobuaki MUTOH:
  ``Improving Pivot Selection Techniques by Iterative Swapping for Similarity Search'',
  DBSJ journal, Vol. 11, No. 3, pp. 9-14 (2012), in Japanese.
• Seiya Okubo, Tetsuro Nishino�CKazuo Ohta�Cand Noboru Kunihiro:
  ``On the Required Number of Grover Iterations on a Bulk Quantum Computation Model'',
  IPSJ Transactions on Mathematical Modeling and Its Applications, Vol.46, No.SIG17(TOM13), pp.10-19 (2005), in Japanese.
• Seiya Okubo, Tetsuro Nishino�CKazuo Ohta�Cand Noboru Kunihiro:
  ``A New Physically Realizable Quantum Search Algorithm'',
  IPSJ Journal, Vol.46, No.6, pp 1416-1425 (2005), in Japanese.
• Kazuo Ohta, Tetsuro Nishino, Seiya Okubo and Noboru Kunihiro:
  ``A Quantum Algorithm using NMR Computers to Break Secret-Key Cryptosystems'',
  New Generation Computing}, Vol.21, No.4, pp.347-361 (2003).

Conference

• Takeaki Gima,Seiya Okubo,and Tetsuro Nishino:
  `` New Cryptographic System Based on Quantum Cellular Automata'',
  Triangle Symposium on Advanced ICT 2008 (TriSAI 2008), October, Daejeon, Korea, pp.175-180 (2008).
• Seiya Okubo, Teruhito Aoki and Tetsuro Nishino:
  ``'Quantum Circuit Complexity and the Number of Controlled-NOT Gates'',
  ICT Triangle Forum 2007 (AICT2007), September 18-20, Beijing, China (2007).
• Seiya Okubo and Tetsuro Nishino:
  ``NMR Quantum Algorithms and Information Security'',
  International Symposium on Advanced ICT (AICT) 2006, August 8, Tokyo, Japan, pp 289-297 (2006).
• Shin-ichi Hashiba, Seiya Okubo and Tetsuro Nishino:
  ``Efficient Quantum Algorithms for Algebraic Problems'',
  International Conference on Computer & Communication Engineering (ICCCE '06), May 9-11, Kuala Lumpur, Malaysia, pp 567-572 (2006).
• N. Kanayama, M. Kida, N. Kunihiro, T. Nishino, K, Ohta and S. Okubo:
  ``Quantum Algorithms for Solving Exact Shortest Vector Problem'',
  ERATO Workshop on Quantum Information Science 2005, August 26-30, Tokyo, Japan, pp 179-180 (2005).
• Nakui Yukihide, Nishino Tetsuro and Okubo Seiya:
  ``On the Minimization of the Depth of Certain Quantum Circuits'',
  International Symposium on Energy, Informatics and Cybernetics (EIC 2005), July 10-13, Orlando, Florida, USA, pp.380-385 (2005).
• Seiya Okubo, Tetsuro Nishino, Kazuo Ohta and Noboru Kunihiro:
  ``A Quantum Algorithm for finding the Minimum on NMR Quantum Computers'',
  ERATO Workshop on Quantum Information Science 2004, September 1-5, Tokyo, Japan, pp.152-153 (2004).
• Hisashi Matsumoto, Seiya Okubo and Tetsuro Nishino:
  ``The Computational Capabilities of Quantum Neural Networks'',
  International Workshop on Modern Science and Technology 2004, September 2-3, Kitami, Japan, pp.226-229 (2004).
• Seiya Okubo, Tetsuro Nishino, Kazuo Ohta and Noboru Kunihiro:
  ``Two Efficient Quantum Search Algorithm on NMR Quantum Computers'',
  ERATO Workshop on Quantum Information Science 2003, September 4-6, Kyoto, Japan, pp.159-160 (2003).
• Kazuo Ohta, Tetsuro Nishino and Seiya Okubo:
  ``The study on quantum algorithm using NMR computers for code breaking of sec ret key cryptosystems'',
  ERATO Workshop on Quantum Information Science 2002, September 6-8, Tokyo, Japan, pp.54-55 (2002).