School personnel information


Yokoyama Tomohiro

Date of Birth



Josephson junction,topological physics

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Organization 【 display / non-display

  • 2017.04.01 - , Department of Materials Engineering Science, Graduate School of Engineering Science, Assistant Professor

Education 【 display / non-display

Keio University Graduate School, Division of Science and Engineering  Completed 2013.03

Research topics 【 display / non-display

  • Semiconductors, optical properties of condensed matter and atomic physics-related

  • Semiconductor nanostructure/superconductor junction

    With strong spin-orbit interaction, Zeeman effect in the nanostructure, Josephson junction has strange quasi-particle states and Josephson super current.
    Multi-terminal Josephson junction with not only 2 superconductors but more than 3 shows unexpected topological property.
    Semiconductors, optical properties of condensed matter and atomic physics-related, Magnetism, superconductivity and strongly correlated systems-related


Academic Papers 【 display / non-display

  • Proposed scheme of realization of artificial nano-heterostructures by optical force under double resonance, Y. Yamada, M. Hoshina, T. Yokoyama and H. Ishihara, Journal of Physics: Conf. Series,1220, 012040, 2019.05, International Conference(Proceedings)

  • Polarization-Dependence of Optical Trapping on Polystyrene Nanoparticles and Their Assembly Formation, T. Yokoyama, T. Matsuura, Y. Tao, H. Ishihara, Proc. SPIE 11141,1114101 1114101-95, 2019.04, International Conference(Proceedings)

  • Numerical demonstration of the alignment of multiple nanoparticles in a wide area beyond single focal laser spot, Y. Tao, T. Matsuura, T. Yokoyama, H. Ishihara, Proc. SPIE 11141,1114101 1114101-93, 2019.04, International Conference(Proceedings)

  • Topological property of multi-terminatl Josephson junction, Tomohiro Yokoyama, BUTSURI,72(6) 402-407, 2017.06, Review Papers(In Japanese)

  • Order, disorder and tunable gaps in the spectrum of Andreev bound states in a multi-terminal superconducting device, Tomohiro Yokoyama, Johannes Rautringer, Wolfgang Belzig, and Yuli V. Nazarov, Physical Review B,95 045411, 2017.01, Papers

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