## Basic Information

### Academic Degrees

- Doctor of Science, The University of Tokyo
- Master of Science, The University of Tokyo

### Educational Activity

- 【Bachelor Degree Program】School of Integrated Arts and Sciences : Department of Integrated Arts and Sciences
- 【Master's Program】Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Physics Program
- 【Master's Program】Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Transdisciplinary Science and Engineering Program
- 【Doctoral Program】Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Physics Program
- 【Doctoral Program】Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Transdisciplinary Science and Engineering Program

### Research Fields

- Mathematical and physical sciences;Physics;Mathematical physics / Fundamental condensed matter physics

### Research Keywords

- quantum cryptography
- quantum entanglement
- quantum information

## Educational Activity

### Course in Charge

- 2021, Liberal Arts Education Program1, 3Term, Perspectives in Physics B
- 2021, Liberal Arts Education Program1, 3Term, Experimental Methods and Laboratory Work in Physics I
- 2021, Liberal Arts Education Program1, 1Term, Experimental Methods and Laboratory Work in Physics I
- 2021, Liberal Arts Education Program1, 4Term, Experimental Methods and Laboratory Work in Physics II
- 2021, Liberal Arts Education Program1, 2Term, Experimental Methods and Laboratory Work in Physics II
- 2021, Undergraduate Education, 1Term, Introduction to Physical Sciences
- 2021, Undergraduate Education, 4Term, Laboratory Work in Material Sciences B
- 2021, Undergraduate Education, 4Term, Experimental Methods for Materials Sciencs B
- 2021, Undergraduate Education, 1Term, Statistical Physics I
- 2021, Undergraduate Education, 3Term, Quantum Information
- 2021, Graduate Education (Master's Program) , Academic Year, Special Study of Advanced Science and Engineering Transdisciplinary Science and Engineering
- 2021, Graduate Education (Master's Program) , First Semester, Special Exercises of Advanced Science and Engineering Transdisciplinary Science and Engineering A
- 2021, Graduate Education (Master's Program) , Second Semester, Special Exercises of Advanced Science and Engineering Transdisciplinary Science and Engineering B
- 2021, Graduate Education (Master's Program) , 2Term, Seminar in Integrated Arts and Sciences
- 2021, Graduate Education (Master's Program) , 4Term, Quantum Theory of Correlated Matter

## Research Activities

### Academic Papers

- Geometrical self-testing of partially entangled two-qubit states, NEW JOURNAL OF PHYSICS, 22(2), 20200211
- Cryptographic quantum bound on nonlocality, PHYSICAL REVIEW A, 95(2), 022108-1-022108-8, 20170208
- ★, Necessary and sufficient criterion for extremal quantum correlations in the simplest Bell scenario, PHYSICAL REVIEW A, 97(5), 050102-1-050102-5, 20180518
- ENTANGLEMENT AND SWAP OF QUANTUM STATES IN TWO QUBITS, QUANTUM INFORMATION & COMPUTATION, 15(11-12), 923-931, 201509
- Experimental Activation of Bound Entanglement, PHYSICAL REVIEW LETTERS, 109(4), 2012
- Quantum-information division and an optimal uncorrelated channel, PHYSICAL REVIEW A, 89(3), 2014
- Mass reduction mechanism in high Tc superconductivity - Estimate of Tc -, Jpn. J. Appl. Phys., 28, L1915-L1917, 19891201
- Diamagnetic response of oxide superconductors: Theoretical descriptions by the mass-reduction mechanism, Phys. Rev. B, 41, 11638-11641, 19901201
- Statistical mechanics of flux configurations in oxide superconductors, Physica B, 165&166, 1099-1100, 19901201
- Charging effects at the surface of HTSC films by CSTM, Physica C, 185-189, 2565-2566, 19911201
- Theory of magnetic flux states in oxide superconductors, Supercond. Sci. Technol., 4, S229-S231, 19911201
- Edge states and quantized Hall resistance in quantum wires containing a periodic potential, Phys. Rev. B, 48, 12053-12062, 19931201
- Tunneling of quasiparticles in the normal-insulator-superconductor-insulator-normal geometry, J. Appl. Phys., 74, 7402-7409, 19931201
- Quantum oscillations in artificial impurity lattices, Physica B, 197, 144-150, 19941201
- Quantum transport in antidot arrays in magnetic fields, Phys. Rev. B, 51, 9881-9890, 19951201
- ★, dc Josephson current through a quantum dot coupled with superconducting leads, Phys. Rev. B, 52, 8358-8362, 19951201
- Numerical studies on quantum transport in antidot arrays, Jpn. J. Appl. Phys., 34, 4317-4320, 19951201
- Detailed analysis of the commensurability peak in antidot arrays with various periods, Phys. Rev. B, 55, 16331-16338, 19971201
- Quantum transport in square and triangular antidot arrays with various periods, Phys. Rev. B, 56, 15195-15201, 19971201
- Quantum transport in antidot lattices, Chaos, Solitons & Fractals, 7/8, 1057-1083, 19971201
- Commensurability peak in square and triangular antidot arrays, Solid-State Electronics, 42, 1147-1150, 19981201
- Classical and quantum transport in antidot arrays with various periods, Phys. Low-Dim. Struct., 5/6, 5-12, 19991201
- Temperature dependence of the resistivity in the double-exchange model, Phys. Rev. B, 59, 8375-8378, 19991201
- Chaos and quantum transport in antidot lattices, Jpn. J. Appl. Phys., 38, 308-314, 19991201
- Propagation of solitons of the magnetization in magnetic nanoparticle arrays, J. Magn. Magn. Mater., 210, L15-L19, 20001201
- ★, Maximally entangled mixed states under nonlocal unitary operations in two qubits, Phys. Rev. A, 62, 022310, 20001201
- Local and nonlocal properties of Werner states, Phys. Rev. A, 62, 044302, 20001201
- Quantum channel locally interacting with environment, Phys. Rev. A, 63, 034301, 20001201
- The reduction of the closest disentangled states, J. Phys. A: Math. Gen., 35, 8075-8081, 20021201
- Analytical formula connecting entangled states and the closest disentangled state, Phys. Rev. A, 67, 060301, 20031201
- Binegativity and geometry of entangled states, Phys. Rev. A, 69, 020301, 20041201
- ★, Bound entanglement provides convertibility of pure entangled states, Phys. Rev. Lett., 93, 190501, 20041201
- Multi-particle entanglement manipulation under positive partial transpose preserving operations, Phys. Rev. A, 71, 052303, 20051201
- Multi-particle entanglement under asymptotic positive partial transpose preserving operations, Phys. Rev. A, 72, 042325, 20051201
- Strong monotonicity in mixed-state entanglement manipulation, Phys. Rev. A, 73, 062308, 20061201
- Theory of entanglement for mixed states, Soryushiron Kenkyu, 113, A13-A14, 20061201
- ★, Dilemma that cannot be resolved by biased quantum coin flipping, Phys. Rev. Lett., 100, 070501, 20081201
- Closed formula for the relative entropy of entanglement, Phys. Rev. A, 78, 032310, 20081201
- Comparison of the relative entropy of entanglement and negativity, Phys. Rev. A, 78, 052308, 20081201
- ★, Asymptotic teleportation scheme as a universal programmable quantum processor, Phys. Rev. Lett., 101, 240501, 20081201
- Entanglement purification protocol for a mixture of a pure entangled state and a pure product state, Phys. Rev. A, 80, 014303, 20091201
- Quantum teleportation scheme by selecting one ofmultiple output ports, Phys. Rev. A, 79, 042306, 20091201
- 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, 75, 19921201
- 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, 1254-1257, 19921201
- 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, 64-71, 19931201
- 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, 104-109, 19971201
- Maximally entangled mixed states in two qubits, Quantum Communication, Computing and Measurement 5, edited by P. Tombesi and O. Hirota, 411-414, 20011201
- Local and nonlocal properties of Werner states, Quantum Communication, Computing and Measurement 5, edited by P. Tombesi and O. Hirota, 407-410, 20011201
- Experimental investigation of pulsed entangled photons and photonic quantum channels, Proceedings of SPIE, 4917, 13-24, 20021201
- 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, 261-264, 20041201
- Composability of biased quantum coin flipping, Quantum Communication, Measurement and Computing (QCMC), edited by A. Lvovsky, 380-383, 20091201
- Deterministic photon-photon root SWAP gate using a Lambda system, PHYSICAL REVIEW A, 82(1), 2010

### Publications such as books

- 2014/09, Introduction to Quantum Information Science, 2014, 09, Scholarly Book, Joint work, 9783662435014, 332