activity
20232026
most citedKerr-Enhanced Optical Spring

10 citations · 11 across the 5 of their papers we have counts for

collaborators

5 papers

physics.optics2026

Reduction of hydroxyl groups in optical nanofibers via in-fiber laser heating

Koki Oguri, Ken-ichi Harada, Samuel K. Ruddell +2

Optical nanofibers fabricated using a standard oxyhydrogen flame exhibit optical losses at wavelengths around 1385~nm due to absorption by embedded hydroxyl groups, posing a challe…

physics.optics2026

Cyclic-Quadrature Intracavity Signal Amplification for Gravitational-Wave Detectors

Kaido Suzuki, Ryo Iden, Ken-ichi Harada +1

The high-frequency sensitivity of laser-interferometric gravitational-wave detectors is limited by quantum shot noise. Increasing the circulating optical power reduces shot noise,…

quant-ph2026★ 1 cited

Fiber-optic quantum interface with an array of more than 100 individually addressable atoms on an optical nanofiber

Mitsuyoshi Takahata, Jameesh Keloth, Takashi Yamamoto +3

Integrating the scalability of individually addressable arrays of optical-tweezer-trapped single atoms with the efficient light-matter interface provided by nanophotonic waveguides…

physics.optics2025

Observation of an Optical Spring in a Robustly Controlled Signal-Recycled Michelson Interferometer

Kaido Suzuki, Ken-ichi Harada, Ryo Iden +4

We present, to the best of our knowledge, the first demonstration of an optical spring in a signal-recycled Michelson interferometer without arm cavities. The setup utilizes multip…

quant-ph2023★ 10 cited

Kerr-Enhanced Optical Spring

Sotatsu Otabe, Wataru Usukura, Kaido Suzuki +4

We propose and experimentally demonstrate the generation of enhanced optical springs using the optical Kerr effect. A nonlinear optical crystal is inserted into a Fabry-Perot cavit…