Neutron displacement noise-free interferometer for gravitational-wave detection

Nishizawa, A.; Iwaguchi, Shoki; Chen, Yanbei; Morimoto, Takeshi; Ishikawa, Tomohiro; Wu, Bin; Watanabe, Izumi; Kawasaki, Yuki; Shimizu, R.; Shimizu, Hirohiko M.; Kitaguchi, Masaaki; Michimura, Yuta; Kawamura, Seiji

doi:10.1103/physrevd.105.124017

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Gravitational Wave Signal In a Sagnac-type Neutron Dfi1

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2023

2024

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Cited by 3 publications

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“…(k gw is a GW wave vector.) However, this second term is negligible because the typical size of a Sagnac-type DFI is x ∼ 100 m, and k gw x ∼ x/λ gw is much smaller for GWs at 1 Hz [14]. For simplicity, we ignore the x(t)-dependence of H ab (ω).…”

Section: Gravitational Wave Signal In a Sagnac-type Neutron Dfimentioning

confidence: 99%

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Sagnac-type neutron displacement-noise-free interferometeric gravitational-wave detector

Kawasaki,

Iwaguchi,

Ishikawa

et al. 2024

Class. Quantum Grav.

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The detection of low-frequency gravitational waves on Earth requires the reduction of displacement noise, which dominates the low-frequency band. One method to cancel test mass displacement noise is a neutron displacement-noise-free interferometer (DFI). This paper proposes a new neutron DFI conﬁguration, a Sagnac-type neutron DFI, which uses a Sagnac interferometer in place of the Mach-Zehnder interferometer. We demonstrate that a sensitivity of the Sagnac-type neutron DFI is higher than that of a conventional neutron DFI with the same interferometer scale. This conﬁguration is particularly signiﬁcant for neutron DFIs with limited space for construction and limited ﬂux from available neutron sources.

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Section: Gravitational Wave Signal In a Sagnac-type Neutron Dfimentioning

confidence: 99%

“…Various configurations of neutron DFI have already been developed [14][15][16]. In this paper, we present a neutron DFI configuration that uses a Sagnac-type interferometer.…”

Section: Introductionmentioning

confidence: 99%