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

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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,…

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…