石坂 智SATOSHI ISHIZAKA

Last Updated :2021/02/01

所属・職名
大学院先進理工系科学研究科 教授
メールアドレス
isizakahiroshima-u.ac.jp

基本情報

主な職歴

  • 1990年03月01日, 2010年03月31日, 日本電気株式会社

学歴

  • 東京大学, 理学系研究科, 日本
  • 東北大学, 理学部, 日本

学位

  • 博士(理学) (東京大学)
  • 理学修士 (東京大学)

研究分野

  • 数物系科学 / 物理学 / 数理物理・物性基礎

研究キーワード

  • 量子暗号
  • 量子エンタングルメント
  • 量子情報

教育活動

授業担当

  1. 2020年, 教養教育, 3ターム, 物理の視点B[旧パッケージ]
  2. 2020年, 教養教育, 3ターム, 物理学実験法・同実験I[1工二]
  3. 2020年, 教養教育, 1ターム, 物理学実験法・同実験I[2工三,2生]
  4. 2020年, 教養教育, 4ターム, 物理学実験法・同実験II[1工二]
  5. 2020年, 教養教育, 2ターム, 物理学実験法・同実験II[2工三,2生]
  6. 2020年, 学部専門, 3ターム, 量子情報論
  7. 2020年, 学部専門, 1ターム, 物理科学概論
  8. 2020年, 学部専門, 4ターム, 物質科学実験B
  9. 2020年, 学部専門, 4ターム, 物質科学実験法B
  10. 2020年, 学部専門, 1ターム, 統計力学I
  11. 2020年, 修士課程・博士課程前期, 4ターム, 相関系量子論

研究活動

学術論文(★は代表的な論文)

  1. Geometrical self-testing of partially entangled two-qubit states, NEW JOURNAL OF PHYSICS, 22巻, 2号, 20200211
  2. Cryptographic quantum bound on nonlocality, PHYSICAL REVIEW A, 95巻, 2号, pp. 022108-1-022108-8, 20170208
  3. ★, Necessary and sufficient criterion for extremal quantum correlations in the simplest Bell scenario, PHYSICAL REVIEW A, 97巻, 5号, pp. 050102-1-050102-5, 20180518
  4. ENTANGLEMENT AND SWAP OF QUANTUM STATES IN TWO QUBITS, QUANTUM INFORMATION & COMPUTATION, 15巻, 11-12号, pp. 923-931, 201509
  5. Experimental Activation of Bound Entanglement, PHYSICAL REVIEW LETTERS, 109巻, 4号, 2012
  6. Quantum-information division and an optimal uncorrelated channel, PHYSICAL REVIEW A, 89巻, 3号, 2014
  7. Mass reduction mechanism in high Tc superconductivity - Estimate of Tc -, Jpn. J. Appl. Phys., 28巻, pp. L1915-L1917, 19891201
  8. Diamagnetic response of oxide superconductors: Theoretical descriptions by the mass-reduction mechanism, Phys. Rev. B, 41巻, pp. 11638-11641, 19901201
  9. Statistical mechanics of flux configurations in oxide superconductors, Physica B, 165&166巻, pp. 1099-1100, 19901201
  10. Charging effects at the surface of HTSC films by CSTM, Physica C, 185-189巻, pp. 2565-2566, 19911201
  11. Theory of magnetic flux states in oxide superconductors, Supercond. Sci. Technol., 4巻, pp. S229-S231, 19911201
  12. Edge states and quantized Hall resistance in quantum wires containing a periodic potential, Phys. Rev. B, 48巻, pp. 12053-12062, 19931201
  13. Tunneling of quasiparticles in the normal-insulator-superconductor-insulator-normal geometry, J. Appl. Phys., 74巻, pp. 7402-7409, 19931201
  14. Quantum oscillations in artificial impurity lattices, Physica B, 197巻, pp. 144-150, 19941201
  15. Quantum transport in antidot arrays in magnetic fields, Phys. Rev. B, 51巻, pp. 9881-9890, 19951201
  16. ★, dc Josephson current through a quantum dot coupled with superconducting leads, Phys. Rev. B, 52巻, pp. 8358-8362, 19951201
  17. Numerical studies on quantum transport in antidot arrays, Jpn. J. Appl. Phys., 34巻, pp. 4317-4320, 19951201
  18. Detailed analysis of the commensurability peak in antidot arrays with various periods, Phys. Rev. B, 55巻, pp. 16331-16338, 19971201
  19. Quantum transport in square and triangular antidot arrays with various periods, Phys. Rev. B, 56巻, pp. 15195-15201, 19971201
  20. Quantum transport in antidot lattices, Chaos, Solitons & Fractals, 7/8巻, pp. 1057-1083, 19971201
  21. Commensurability peak in square and triangular antidot arrays, Solid-State Electronics, 42巻, pp. 1147-1150, 19981201
  22. Classical and quantum transport in antidot arrays with various periods, Phys. Low-Dim. Struct., 5/6巻, pp. 5-12, 19991201
  23. Temperature dependence of the resistivity in the double-exchange model, Phys. Rev. B, 59巻, pp. 8375-8378, 19991201
  24. Chaos and quantum transport in antidot lattices, Jpn. J. Appl. Phys., 38巻, pp. 308-314, 19991201
  25. Propagation of solitons of the magnetization in magnetic nanoparticle arrays, J. Magn. Magn. Mater., 210巻, pp. L15-L19, 20001201
  26. ★, Maximally entangled mixed states under nonlocal unitary operations in two qubits, Phys. Rev. A, 62巻, pp. 022310, 20001201
  27. Local and nonlocal properties of Werner states, Phys. Rev. A, 62巻, pp. 044302, 20001201
  28. Quantum channel locally interacting with environment, Phys. Rev. A, 63巻, pp. 034301, 20001201
  29. The reduction of the closest disentangled states, J. Phys. A: Math. Gen., 35巻, pp. 8075-8081, 20021201
  30. Analytical formula connecting entangled states and the closest disentangled state, Phys. Rev. A, 67巻, pp. 060301, 20031201
  31. Binegativity and geometry of entangled states, Phys. Rev. A, 69巻, pp. 020301, 20041201
  32. ★, Bound entanglement provides convertibility of pure entangled states, Phys. Rev. Lett., 93巻, pp. 190501, 20041201
  33. Multi-particle entanglement manipulation under positive partial transpose preserving operations, Phys. Rev. A, 71巻, pp. 052303, 20051201
  34. Multi-particle entanglement under asymptotic positive partial transpose preserving operations, Phys. Rev. A, 72巻, pp. 042325, 20051201
  35. Strong monotonicity in mixed-state entanglement manipulation, Phys. Rev. A, 73巻, pp. 062308, 20061201
  36. Theory of entanglement for mixed states, Soryushiron Kenkyu, 113巻, pp. A13-A14, 20061201
  37. ★, Dilemma that cannot be resolved by biased quantum coin flipping, Phys. Rev. Lett., 100巻, pp. 070501, 20081201
  38. Closed formula for the relative entropy of entanglement, Phys. Rev. A, 78巻, pp. 032310, 20081201
  39. Comparison of the relative entropy of entanglement and negativity, Phys. Rev. A, 78巻, pp. 052308, 20081201
  40. ★, Asymptotic teleportation scheme as a universal programmable quantum processor, Phys. Rev. Lett., 101巻, pp. 240501, 20081201
  41. Entanglement purification protocol for a mixture of a pure entangled state and a pure product state, Phys. Rev. A, 80巻, pp. 014303, 20091201
  42. Quantum teleportation scheme by selecting one ofmultiple output ports, Phys. Rev. A, 79巻, pp. 042306, 20091201
  43. Coulomb staircase and SET oscillation at the surfaces of high temperature superconductors by cryogenic STM, Single-electron tunneling and mesoscopic devices, edited by H. Koch and H. Lubbig, pp. 75, 19921201
  44. Numerical studies on edge states in two-dimensional periodic potentials in strong magnetic field, Proceedings of 21st International Conference on the Physics of Semiconductor, edited by P. Jiang and H.-Z.Zheng, pp. 1254-1257, 19921201
  45. Charging effect and tunneling at the surfaces of oxide superconductors, Tunneling Phenomena in High and Low Tc Superconductors, edited by A. di Chiara, M. Russo, pp. 64-71, 19931201
  46. Quantum transport in antidot systems, Proceedings of the International Conference on Quantum Device and Circuits, edited by K. Ismail, S. Bandyopadhyay and J. P. Leburton, pp. 104-109, 19971201
  47. Maximally entangled mixed states in two qubits, Quantum Communication, Computing and Measurement 5, edited by P. Tombesi and O. Hirota, pp. 411-414, 20011201
  48. Local and nonlocal properties of Werner states, Quantum Communication, Computing and Measurement 5, edited by P. Tombesi and O. Hirota, pp. 407-410, 20011201
  49. Experimental investigation of pulsed entangled photons and photonic quantum channels, Proceedings of SPIE, 4917巻, pp. 13-24, 20021201
  50. Effect of Bound Entanglement on the Convertibility of Pure States, Quantum Communication, Measurement and Computing, edited by S. M. Barnett, E. Andersson, J. Jeffers, P. Ohberg, and O. Hirota, pp. 261-264, 20041201
  51. Composability of biased quantum coin flipping, Quantum Communication, Measurement and Computing (QCMC), edited by A. Lvovsky, pp. 380-383, 20091201
  52. 量子コンピュータ概論 -量子コンピュータは何故速いのか?-, シミュレーション, 19巻, 4号, pp. 254-260, 20001201
  53. 束縛エンタングルメント, 数理科学, 500巻, pp. 29-35, 20050201
  54. EPRパラドックス, オプトロニクス, 303巻, pp. 165-170, 20070301
  55. Deterministic photon-photon root SWAP gate using a Lambda system, PHYSICAL REVIEW A, 82巻, 1号, 2010

著書等出版物

  1. 2009年11月, 基礎からの量子光学 (分担執筆), オプトロニクス社, 2009年, 11, 単行本(学術書), 共著, 9784902312423, 528
  2. 2012年06月, 量子情報科学入門, 共立出版, 2012年, 06, 単行本(学術書), 共著, 9784320122994, 361
  3. 2014年09月, Introduction to Quantum Information Science, Springer, 2014年, 09, 単行本(学術書), 共著, 9783662435014, 332