High-quality electromagnetically-induced absorption resonances in a buffer-gas-filled vapour cell
High-quality electromagnetically-induced absorption resonances in a buffer-gas-filled vapour cell
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缓冲气体填充的蒸气池中的高质量电磁感应吸收共振
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
I. Ryabtsev
中科院分区：
文献类型：
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作者：
D. V. Brazhnikov;S. Ignatovich;V. Vishnyakov;M. Skvortsov;C. Andreeva;V. M. Entin;I. Ryabtsev
实验研究了碱蒸汽池中电磁感应吸收(EIA)的磁光亚自然线宽共振。观察配置包括使用两个相互垂直的线偏振的反向传输泵浦和探测光波，在有Ar缓冲气体存在的情况下激发87Rb D1线的开放光学跃迁。记录在探测波传输中的EIA信号达到了前所未有的对比度，相对于宽的多普勒吸收基座约为135%，相对于背景传输信号的电平约为29%。这些对比度值对应于相对较小的共振全宽度，半最大值约为7.2毫克(5.2 千赫)。观察到的最窄的环境影响分析共振的宽度约为2.1毫克(1.5 千赫)。据我们所知，在千赫宽度上如此大的相对对比度是EIA共振的创纪录结果。总的来说，这项工作已经在实验上证明了所使用的磁光方案在各种量子技术(弱磁场的量子传感器、光开关和其他光子元件)中具有很好的前景。
Magneto-optical subnatural-linewidth resonances of electromagnetically-induced absorption (EIA) in an alkali vapour cell have been experimentally studied. The observation configuration includes using two counter-propagating pumps and probe light waves with mutually orthogonal linear polarizations, exciting an open optical transition in the 87Rb D1 line in the presence of argon buffer gas. The EIA signals registered in a probe-wave transmission reach an unprecedented contrast of about 135% with respect to the wide ‘Doppler’ absorption pedestal and 29% with respect to the level of background transmission signal. These contrast values correspond to a relatively small resonance full width at half maximum of about 7.2 mG (5.2 kHz). The width of the narrowest EIA resonance observed is about 2.1 mG (1.5 kHz). To our knowledge, such a large relative contrast at the kHz-width is the record result for EIA resonances. In general, the work has experimentally proved that the magneto-optical scheme used has very good prospects for various quantum technologies (quantum sensors of weak magnetic fields, optical switches and other photonic elements).