429 citations · 694 across the 13 of their papers we have counts for
13 papers
Mid-infrared spontaneous and stimulated emission dynamics in black phosphorus
Hisashi Sumikura, Akihiko Shinya, Masaya Notomi
Black phosphorus (BP) has attracted attention as a light-emitting layered semiconductor for mid-infrared (MIR) photonics owing to its direct and thickness-tunable bandgap energy, h…
Non-Centrosymmetric -Phase GaS Nanobelts for On-Chip Nonlinear Photonic Applications
Yukihiro Endo, Masato Takiguchi, Yoshiaki Sekine +2
Second-order nonlinear optical processes in van der Waals (vdW) semiconductors offer a compelling route toward compact, integrable photon-conversion platforms. Among III-VI vdW sem…
Silicon photonic optical-electrical-optical converters based on load-resistor and current-injection operation
Masaya Arahata, Shota Kita, Akihiko Shinya +2
Optical-electrical-optical (OEO) converters are key primitives for low-latency, energy-efficient photonic computing because they enable nonlinear activation and optical signal rege…
Low loss switchable topological photonic crystal enabled by submicron-scale patterning and phase-change of Sb2Se3
Takahiro Uemura, Yuto Moritake, Eiichi Kuramochi +3
Photonic topological insulators (PTIs) offer robust platforms for light manipulation, but reconfigurable control of their topological properties without degrading performance remai…
Observation of non-Hermitian point gap in photonic crystals
Yuto Moritake, Nozomi Ogawa, Issei Takeda +7
Non-Hermitian point gap (NHPG) is a unique phenomenon in non-Hermitian systems and induces non-Hermitian skin effect (NHSE). In photonic crystals, NHPG and the NHSE have previously…
On-chip room-temperature CW lasing from a III-V nanowire integrated with a Si photonic crystal platform
Masato Takiguchi, Takuro Fujii, Hisashi Sumikura +3
We report the demonstration of continuous-wave (CW) lasing at room temperature from a III-V semiconductor nanowire integrated into a Si photonic crystal (PhC) cavity. Conventional…
Vector beam generation from standing hollow GaN nanowire lasers on sapphire substrate
Masato Takiguchi, Sylvain Sergent, Benjamin Damilano +9
We fabricated GaN based hollow nanowires standing upright on a sapphire substrate by the sublimation method and found that they exhibit laser oscillation at room temperature. These…
Photon correlation measurements of stochastic limit cycles emerging from high- nonlinear silicon photonic crystal microcavities
N. Takemura, M. Takiguchi, H. Sumikura +3
We performed measurements of photon correlation [] in driven nonlinear high- silicon (Si) photonic crystal (PhC) microcavities. The measured exhibits a…
Ultrafast and energy-efficient all-optical switching with graphene-loaded deep-subwavelength plasmonic waveguides
Masaaki Ono, Masanori Hata, Masato Tsunekawa +4
All-optical switches have attracted attention because they can potentially overcome the speed limitation of electric switches. However, ultrafast, energy-efficient all-optical swit…
Simulation technique of quantum optical emission process from multiple two-level atoms based on classical numerical method
Hideaki Taniyama, Hisashi Sumikura, Masaya Notomi
In this paper, we report a numerical method for analyzing optical radiation from a two-level atom. The proposed method can consistently consider the optical emission and absorption…
All-optical dynamic modulation of spontaneous emission rate in hybrid optomechanical cavity quantum electrodynamics systems
Feng Tian, Hisashi Sumikura, Eiichi Kuramochi +4
Recent nanofabrication technologies have miniaturized optical and mechanical resonators, and have led to a variety of novel optomechanical systems in which optical and mechanical m…
Fast Purcell-enhanced single photon source in 1,550-nm telecom band from a resonant quantum dot-cavity coupling
M. D. Birowosuto, H. Sumikura, S. Matsuo +4
High-bit-rate nanocavity-based single photon sources in the 1,550-nm telecom band are challenges facing the development of fibre-based long-haul quantum communication networks. Her…
All-silicon sub-Gb/s telecom detector with low dark current and high quantum efficiency on chip
Takasumi Tanabe, Hisashi Sumikura, Hideaki Taniyama +2
We demonstrate channel selective 0.1-Gb/s photo-receiver operation at telecom wavelength using a silicon high-Q photonic crystal nanocavity with a laterally integrated p-i-n diode.…