학술논문
A quantum-enhanced search for dark matter axions
Document Type
Working Paper
Author
Backes, K. M.; Palken, D. A.; Kenany, S. Al; Brubaker, B. M.; Cahn, S. B.; Droster, A.; Hilton, Gene C.; Ghosh, Sumita; Jackson, H.; Lamoreaux, S. K.; Leder, A. F.; Lehnert, K. W.; Lewis, S. M.; Malnou, M.; Maruyama, R. H.; Rapidis, N. M.; Simanovskaia, M.; Singh, Sukhman; Speller, D. H.; Urdinaran, I.; Vale, Leila R.; van Assendelft, E. C.; van Bibber, K.; Wang, H.
Source
Subject
Language
Abstract
In dark matter axion searches, quantum uncertainty manifests as a fundamental noise source, limiting the measurement of the quadrature observables used for detection. We use vacuum squeezing to circumvent the quantum limit in a search for a new particle. By preparing a microwave-frequency electromagnetic field in a squeezed state and near-noiselessly reading out only the squeezed quadrature, we double the search rate for axions over a mass range favored by recent theoretical projections. We observe no signature of dark matter axions in the combined $16.96-17.12$ and $17.14-17.28\space\mu\text{eV}/c^2$ mass window for axion-photon couplings above $g_{\gamma} = 1.38\times g_{\gamma}^\text{KSVZ}$, reporting exclusion at the 90% level.
Comment: 7 pages, 4 figures
Comment: 7 pages, 4 figures