Broadband limits on stochastic length fluctuations from a pair of table-top interferometers
Abstract
The Quantum-Enhanced Space-Time (QUEST) experiment consists of a pair of colocated power recycled Michelson interferometers, each designed to have a broadband, shot-noise-limited displacement sensitivity of 2×10^{-19} m/sqrt[Hz] from 1 to 200 MHz. Here, we present the first results of QUEST, with a search up to 80 MHz, that set new upper limits on correlated length fluctuations from 13 to 80 MHz, constituting the first broadband constraints for a stochastic gravitational wave background at these frequencies. In a coincident observing run of 10^{4} s, the averaging of the cross-correlation spectra between the two interferometer signals resulted in a strain sensitivity of 3×10^{-20} 1/sqrt[Hz], making QUEST the most sensitive table-top interferometric system to date.
Details
- Organisationseinheit(en)
-
QuantumFrontiers
- Externe Organisation(en)
-
Cardiff University
Gran Sasso Science Institute
Istituto Nazionale di Fisica Nucleare (INFN)
Università degli studi di Roma Tor Vergata
California Institute of Technology (Caltech)
Louisiana State University
- Typ
- Artikel
- Journal
- Physical review letters
- Band
- 135
- Seiten
- 101402
- Anzahl der Seiten
- 1
- ISSN
- 0031-9007
- Publikationsdatum
- 03.09.2025
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Allgemeine Physik und Astronomie
- Elektronische Version(en)
-
https://doi.org/10.1103/61j9-cjkk (Zugang:
Offen
)
https://doi.org/10.48550/arXiv.2410.09175 (Zugang: Offen )
