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arXiv · 2509.12095

Jiggled interferometer: Ground-based gravitational wave detector using rapidly-repeated free-falling test masses

Shoki Iwaguchi·Bin Wu·Kurumi Umemura·Tomohiro Ishikawa·Kenji Tsuji·Ryota Nishimura·Yuta Michimura·Yutaro Enomoto·Soichiro Morisaki·Yoichi Aso·Tomotada Akutsu·Keiko Kokeyama·Seiji Kawamura
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Abstract

We propose the Jiggled Interferometer (JIGI), a novel ground-based gravitational wave detector employing low-frequency noise mitigation similar to that of space-based detectors. Using rapidly-repeated free-fall test masses, JIGI eliminates seismic and suspension thermal noise during free fall. Compared to the Juggled Interferometer, it offers improved angular stability and avoids tracking lasers. We analyze detrending -- a required step to remove actuation-induced noise -- and show sensitivity gains of about four orders of magnitude in the 0.1-0.3 Hz band, relative to seismic and suspension noise extrapolated from the Cosmic Explorer.

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Shoki Iwaguchi, Bin Wu, Kurumi Umemura, Tomohiro Ishikawa, Kenji Tsuji, Ryota Nishimura, Yuta Michimura, Yutaro Enomoto, Soichiro Morisaki, Yoichi Aso, Tomotada Akutsu, Keiko Kokeyama, Seiji Kawamura. 2025-09-15. Jiggled interferometer: Ground-based gravitational wave detector using rapidly-repeated free-falling test masses. https://arxiv.org/abs/2509.12095

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