Gravitational wave detection with atom interferometry
Abstract
We propose two distinct atom interferometer gravitational wave detectors, one terrestrial and another satellite-based, utilizing the core technology of the Stanford 10 m atom interferometer presently under construction. The terrestrial experiment can operate with strain sensitivity ∼10Hz in the 1-10 Hz band, inaccessible to LIGO, and can detect gravitational waves from solar mass binaries out to megaparsec distances. The satellite experiment probes the same frequency spectrum as LISA with comparable strain sensitivity ∼10Hz. Each configuration compares two widely separated atom interferometers run using common lasers. The effect of the gravitational waves on the propagating laser field produces the main effect in this configuration and enables a large enhancement in the gravitational wave signal while significantly suppressing many backgrounds. The use of ballistic atoms (instead of mirrors) as inertial test masses improves systematics coming from vibrations and acceleration noise, and reduces spacecraft control requirements.
- Publication:
-
Physics Letters B
- Pub Date:
- July 2009
- DOI:
- 10.1016/j.physletb.2009.06.011
- arXiv:
- arXiv:0712.1250
- Bibcode:
- 2009PhLB..678...37D
- Keywords:
-
- General Relativity and Quantum Cosmology;
- Astrophysics;
- High Energy Physics - Phenomenology;
- High Energy Physics - Theory;
- Physics - Atomic Physics
- E-Print:
- 5 pages, 5 figures, updated with journal reference