Mitigating anthropogenic and synanthropic noise in atom interferometer searches for ultralight dark matter

Carlton, John; McCabe, Christopher

doi:10.1103/physrevd.108.123004

Cited by 3 publications

(1 citation statement)

References 95 publications

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“…While the free-falling atom clouds functioning as atom-interferometers' test masses are decoupled from mechanical vibrations, they are subject to gravitational forces produced by variations of Earth's (or any other nearby) mass-distribution on timescales comparable to the (inverse) frequency of the signal. Below frequencies of O(1) Hz, a terrestrial detector will be affected by GGN from seismic (surface) waves and possibly other [142] sources. Various strategies for reducing GGN have been proposed [143][144][145][146].…”

Section: B3 Detector Benchmarksmentioning

confidence: 99%

Gravitational wave measurement in the mid-band with atom interferometers

Baum,

Bogorad,

Graham

2024

J. Cosmol. Astropart. Phys.

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Gravitational Waves (GWs) have been detected in the ∼ 100 Hz and nHz bands, but most of the gravitational spectrum remains unobserved. A variety of detector concepts have been proposed to expand the range of observable frequencies. In this work, we study the capability of GW detectors in the “mid-band”, the ∼ 30 mHz– 10 Hz range between LISA and LIGO, to measure the signals from and constrain the properties of ∼ 1 – 100 M ⊙ compact binaries. We focus on atom-interferometer-based detectors. We describe a Fisher matrix code, AIMforGW, which we created to evaluate their capabilities, and present numerical results for two benchmarks: terrestrial km-scale detectors, and satellite-borne detectors in medium Earth orbit. Mid-band GW detectors are particularly well-suited to pinpointing the location of GW sources on the sky. We demonstrate that a satellite-borne detector could achieve sub-degree sky localization for any detectable source with chirp mass ℳ c ≲ 50 M ⊙. We also compare different detector configurations, including different locations of terrestrial detectors and various choices of the orbit of a satellite-borne detector. As we show, a network of only two terrestrial single-baseline detectors or one single-baseline satellite-borne detector would each provide close-to-uniform sky-coverage, with signal-to-noise ratios varying by less than a factor of two across the entire sky. We hope that this work contributes to the efforts of the GW community to assess the merits of different detector proposals.

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Section: B3 Detector Benchmarksmentioning

confidence: 99%

Gravitational wave measurement in the mid-band with atom interferometers

Baum,

Bogorad,

Graham

2024

J. Cosmol. Astropart. Phys.

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Optimal baseline exploitation in vertical dark-matter detectors based on atom interferometry

Di Pumpo,

Friedrich,

Giese

2024

AVS Quantum Science

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Several terrestrial detectors for gravitational waves and dark matter based on long-baseline atom interferometry are currently in the final planning stages or already under construction. These upcoming vertical sensors are inherently subject to gravity and thus feature gradiometer or multi-gradiometer configurations using single-photon transitions for large momentum transfer. While there has been significant progress on optimizing these experiments against detrimental noise sources and for deployment at their projected sites, finding optimal configurations that make the best use of the available resources is still an open issue. Even more, the fundamental limit of the device's sensitivity is still missing. Here, we fill this gap and show that (a) resonant-mode detectors based on multi-diamond fountain gradiometers achieve the optimal, shot-noise limited, sensitivity if their height constitutes 20% of the available baseline; (b) this limit is independent of the dark matter oscillation frequency; and (c) doubling the baseline decreases the ultimate measurement uncertainty by approximately 65%. Moreover, we propose a multi-diamond scheme with less mirror pulses where the leading-order gravitational phase contribution is suppressed and compare it to established geometries and demonstrate that both configurations saturate the same fundamental limit.

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Terrestrial very-long-baseline atom interferometry: Workshop summary

Abend,

Allard,

Alonso

et al. 2024

AVS Quantum Science

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This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around the world to discuss the exciting developments in large-scale atom interferometer (AI) prototypes and their potential for detecting ultralight dark matter and gravitational waves. The primary objective of the workshop was to lay the groundwork for an international TVLBAI proto-collaboration. This collaboration aims to unite researchers from different institutions to strategize and secure funding for terrestrial large-scale AI projects. The ultimate goal is to create a roadmap detailing the design and technology choices for one or more kilometer--scale detectors, which will be operational in the mid-2030s. The key sections of this report present the physics case and technical challenges, together with a comprehensive overview of the discussions at the workshop together with the main conclusions.

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Mitigating anthropogenic and synanthropic noise in atom interferometer searches for ultralight dark matter

Cited by 3 publications

References 95 publications

Gravitational wave measurement in the mid-band with atom interferometers

Gravitational wave measurement in the mid-band with atom interferometers

Optimal baseline exploitation in vertical dark-matter detectors based on atom interferometry

Terrestrial very-long-baseline atom interferometry: Workshop summary

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