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Near-Quantum-Noise Axion Dark Matter Search at CAPP around 9.5 μeV

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Title
Near-Quantum-Noise Axion Dark Matter Search at CAPP around 9.5 μeV
Author(s)
Jinsu Kim; Oh Joon Kwon; Çağlar Kutlu; Woo Hyun Chung; Andrei Matlashov; Sergey Uchaykin; van Loo, Arjan Ferdinand; Nakamura, Yasunobu; Seonjeong Oh; HeeSu BYUN; Danho Ahn; Yannis K. Semertzidis
Publication Date
2023-02
Journal
Physical Review Letters, v.130, no.9
Publisher
American Physical Society
Abstract
We report the results of an axion dark matter search over an axion mass range of 9.39–9.51 μeV. A fluxdriven Josephson parametric amplifier (JPA) was added to the cryogenic receiver chain. A system noise temperature of as low as 200 mK was achieved, which is the lowest recorded noise among published axion cavity experiments with phase-insensitive JPA operation. In addition, we developed a two-stage scanning method which boosted the scan speed by 26%. As a result, a range of two-photon coupling in a plausible model for the QCD axion was excluded with an order of magnitude higher in sensitivity than existing limits.
URI
https://pr.ibs.re.kr/handle/8788114/13085
DOI
10.1103/physrevlett.130.091602
ISSN
0031-9007
Appears in Collections:
Center for Axion and Precision Physics Research(액시온 및 극한상호작용 연구단) > 1. Journal Papers (저널논문)
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