Optical Ring Cavity Search for Axion Dark Matter.
Optical Ring Cavity Search for Axion Dark Matter.
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DOI：
10.1103/physrevlett.121.161301
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发表时间：
2018-05
影响因子：
8.6
通讯作者：
Ippei Obata;Tomohiro Fujita;Y. Michimura
中科院分区：
文献类型：
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作者：
Ippei Obata;Tomohiro Fujita;Y. Michimura
我们提出了一个新的实验来寻找区分左旋和右旋极化光子相速度的轴子暗物质。我们的光学腔测量了激光束的两个圆偏振之间的共振频率之差。我们的腔体设计采用双通道结构，实现了零实验，对环境干扰具有较高的共模抑制能力。我们估计了轴子质量m > 10^{-10} eV对轴-光子耦合常数g_{aγ}的潜在灵敏度。在m > 10^{-15} eV的低质量范围内，我们可以得到g_{aγ} > 3×10^{-16} GeV^{-1}，这超出了当前的界限几个数量级。
We propose a novel experiment to search for axion dark matter that differentiates the phase velocities of the left- and right-handed polarized photons. Our optical cavity measures the difference of the resonant frequencies between two circular polarizations of the laser beam. The design of our cavity adopts a double-pass configuration to realize a null experiment and give a high common mode rejection of environmental disturbances. We estimate the potential sensitivity to the axion-photon coupling constant g_{aγ} for the axion mass m≲10^{-10} eV. In a low mass range m≲10^{-15} eV, we can achieve g_{aγ}≲3×10^{-16} GeV^{-1}, which is beyond the current bound by several orders of magnitude.