102 citations · 1.1k across the 41 of their papers we have counts for
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Variable group delay in a metamaterial with field-gradient-induced transparency
Yasuhiro Tamayama, Toshihiro Nakanishi, Masao Kitano
We realize variable control of the group delay in an electromagnetically induced transparency-like metamaterial. Its unit cell is designed to have a bright mode and a dark mode. Th…
Electromagnetic response of a metamaterial with field-gradient-induced transparency
Yasuhiro Tamayama, Toshihiro Nakanishi, Yasuhiro Wakasa +3
We investigate a dynamically controllable electromagnetically induced transparency-like metamaterial. The unit structure of the metamaterial consists of a low-quality-factor resona…
Enhancement of second harmonic generation in a doubly resonant metamaterial
Tetsuo Kanazawa, Yasuhiro Tamayama, Toshihiro Nakanishi +1
We investigate second harmonic (SH) generation in a doubly resonant metamaterial. We show that SH generation can be enhanced when the resonant condition is satisfied for the SH fre…
Bloch sphere representation of three-vertex geometric phases
Shuhei Tamate, Kazuhisa Ogawa, Masao Kitano
The properties of the geometric phases between three quantum states are investigated in a high-dimensional Hilbert space using the Majorana representation of symmetric quantum stat…
Nonlinear behavior of geometric phases induced by photon pairs
H. Kobayashi, Y. Ikeda, S. Tamate +2
In this study, we observe the nonlinear behavior of the two-photon geometric phase for polarization states using time-correlated photons pairs. This phase manifests as a shift of t…