New bounds on dark matter coupling from a global network of optical atomic clocks
New bounds on dark matter coupling from a global network of optical atomic clocks
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DOI：
10.1126/sciadv.aau4869
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发表时间：
2018-06
期刊：
影响因子：
13.6
通讯作者：
P. Wcisło;P. Wcisło;P. Ablewski;K. Beloy;S. Bilicki;S. Bilicki;M. Bober;Roger Brown;R. Fasano;R. Fasano;R. Ciuryło;H. Hachisu;T. Ido;J. Lodewyck;A. Ludlow;A. Ludlow;W. McGrew;W. McGrew;P. Morzyński;P. Morzyński;D. Nicolodi;M. Schioppo;M. Schioppo;M. Sekido;R. L. Targat;P. Wolf;Xiaogang Zhang;B. Zjawin;M. Zawada
中科院分区：
文献类型：
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作者：
P. Wcisło;P. Wcisło;P. Ablewski;K. Beloy;S. Bilicki;S. Bilicki;M. Bober;Roger Brown;R. Fasano;R. Fasano;R. Ciuryło;H. Hachisu;T. Ido;J. Lodewyck;A. Ludlow;A. Ludlow;W. McGrew;W. McGrew;P. Morzyński;P. Morzyński;D. Nicolodi;M. Schioppo;M. Schioppo;M. Sekido;R. L. Targat;P. Wolf;Xiaogang Zhang;B. Zjawin;M. Zawada
第一个基于光学原子钟的地球尺度量子传感器网络正在寻找暗物质候选者。我们报告了第一个基于光学原子钟的地球尺度量子传感器网络，旨在探测暗物质。利用光学原子钟重要部分（即冷原子和光学参考腔）对精细结构常数的敏感性差异，我们可以在不需要实时比较时钟的情况下对DM特征进行敏感搜索。我们报告了对精细结构常数瞬态变化约束的两个数量级的改进，这大大提高了标准模型(SM) -DM耦合的检测极限。我们在三大洲的四个实验室使用Yb和Sr光学原子钟来寻找拓扑缺陷和大质量标量场候选者。没有与DM耦合一致的信号被识别出来，导致DM- sm耦合的约束大大改善。
The first Earth-scale quantum sensor network based on optical atomic clocks is looking for dark matter candidates. We report on the first Earth-scale quantum sensor network based on optical atomic clocks aimed at dark matter (DM) detection. Exploiting differences in the susceptibilities to the fine-structure constant of essential parts of an optical atomic clock, i.e., the cold atoms and the optical reference cavity, we can perform sensitive searches for DM signatures without the need for real-time comparisons of the clocks. We report a two orders of magnitude improvement in constraints on transient variations of the fine-structure constant, which considerably improves the detection limit for the standard model (SM)–DM coupling. We use Yb and Sr optical atomic clocks at four laboratories on three continents to search for both topological defect and massive scalar field candidates. No signal consistent with a DM coupling is identified, leading to considerably improved constraints on the DM-SM couplings.