439 citations · 925 across the 11 of their papers we have counts for
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Quantum emission assisted by energy landscape modification in pentacene-decorated carbon nanotubes
Zhen Li, Keigo Otsuka, Daiki Yamashita +2
Photoluminescent carbon nanotubes are expected to become versatile room-temperature single-photon sources that have applications in quantum information processing. Quantum emission…
Deterministic transfer of optical-quality carbon nanotubes for atomically defined technology
K. Otsuka, N. Fang, D. Yamashita +3
When continued device scaling reaches the ultimate limit imposed by atoms, technology based on atomically precise structures is expected to emerge. Device fabrication will then req…
High efficiency dark-to-bright exciton conversion in carbon nanotubes
A. Ishii, H. Machiya, Y. K. Kato
We report that dark excitons can have a large contribution to the emission intensity in carbon nanotubes due to an efficient exciton conversion from a dark state to a bright state.…
Super-Resolution Fluorescence Imaging of Carbon Nanotubes Using a Nonlinear Excitonic Process
K. Otsuka, A. Ishii, Y. K. Kato
Highly efficient exciton-exciton annihilation process unique to one-dimensional systems is utilized for super-resolution imaging of air-suspended carbon nanotubes. Through the comp…
Organic molecular tuning of many-body interaction energies in air-suspended carbon nanotubes
S. Tanaka, K. Otsuka, K. Kimura +4
We investigate adsorption effects of copper phthalocyanine molecules on excitons and trions in air-suspended carbon nanotubes. Using photoluminescence excitation spectroscopy, we o…
Molecular screening effects on exciton-carrier interactions in suspend carbon nanotubes
T. Uda, S. Tanaka, Y. K. Kato
Photoluminescence spectroscopy measurements are performed on suspended carbon nanotubes in a field-effect configuration, and the gate voltage dependence of photoluminescence spectr…