Iwaguchi, Shoki, Fujiie, Takuhiro, Nambu, Taro, Kitaguchi, Masaaki, Yamagata, Yutaka, Mishima, Kenji, Nishizawa, Atsushi, Ishikawa, Tomohiro, Tsuji, Kenji, Umemura, Kurumi, Kobayashi, Kazuhiro, Onishi, Takafumi, Kokeyama, Keiko  ORCID: https://orcid.org/0000-0002-2896-1992, Shimizu, Hirohiko, Michimura, Yuta and Kawamura, Seiji
2025.
Proof-of-principle experiment on a displacement-noise-free neutron interferometer for gravitational wave detection.
Physical Review D (particles, fields, gravitation, and cosmology)
112
, 102002.
10.1103/yg4l-cj1t
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Abstract
The displacement-noise-free interferometer (DFI) is designed to eliminate all displacement-induced noise while retaining sensitivity to gravitational wave (GW) signals. Ground-based DFIs suffer from physical arm-length limitations, resulting in poor sensitivity at frequencies below 1 kHz. To address this, previous research introduced a neutron-based DFI, which replaces laser light with neutrons and achieves exceptional sensitivity down to a few hertz. In this study, we conducted a proof-of-principle experiment using a pulsed neutron source at the Japan Proton Accelerator Research Complex. Despite practical constraints that led to deviations from the ideal experimental design, we optimized the setup and developed a novel analysis method that successfully cancels displacement noise while preserving simulated GW signals. This work presents the first successful demonstration of a neutron DFI and a neutron interferometer for GW detection.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Physics and Astronomy |
| Publisher: | American Physical Society |
| ISSN: | 2470-0010 |
| Date of First Compliant Deposit: | 1 December 2025 |
| Date of Acceptance: | 22 September 2025 |
| Last Modified: | 01 Dec 2025 14:15 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/182455 |
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