170 citations · 1.4k across the 43 of their papers we have counts for
43 papers
Hidden Symmetry Protection and Topology in Surface Maxwell Waves
Yosuke Nakata, Toshihiro Nakanishi, Ryo Takahashi +2
Since the latter half of the 20th century, the use of metal in optics has become a promising plasmonics field for controlling light at a deep subwavelength scale. Surface plasmon p…
Dynamic quarter-wave metasurface for efficient helicity inversion of polarization beyond the single-layer conversion limit
Mitsuki Kobachi, Fumiaki Miyamaru, Toshihiro Nakanishi +3
Terahertz chiral sensing and polarization-multiplexing communication demand subwavelength devices that dynamically invert polarization helicity. Metasurfaces can enhance anisotropy…
Direct measurement of ultrafast temporal wavefunctions
Kazuhisa Ogawa, Takumi Okazaki, Hirokazu Kobayashi +2
The large capacity and robustness of information encoding in the temporal mode of photons is important in quantum information processing, in which characterizing temporal quantum s…
Broadband operation of active terahertz quarter-wave plate achieved with vanadium-dioxide-based metasurface switchable by current injection
Toshihiro Nakanishi, Yosuke Nakata, Yoshiro Urade +1
We demonstrate the broadband operation of a switchable terahertz quarter-wave plate achieved with an active metasurface employing vanadium dioxide. For this purpose, we utilize ani…
A framework for measuring weak values without weak interactions and its diagrammatic representation
Kazuhisa Ogawa, Osamu Yasuhiko, Hirokazu Kobayashi +2
Weak values are typically obtained experimentally by performing weak measurements, which involve weak interactions between the measured system and a probe. However, the determinati…
Storage and retrieval of electromagnetic waves using electromagnetically induced transparency in a nonlinear metamaterial
Toshihiro Nakanishi, Masao Kitano
We investigate the storage and retrieval of electromagnetic waves using a nonlinear metamaterial, analogous to the electromagnetically induced transparency (EIT) observed in atomic…