Superradiant Raman Laser Magnetometer

Superradiant Raman Laser Magnetometer
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DOI:
10.1063/1.4773241
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发表时间:
2012-10
期刊:
arXiv: Atomic Physics
影响因子:
--
通讯作者:
J. Weiner;K. Cox;J. Bohnet;Zilong Chen;J. K. Thompson
J. Weiner;K. Cox;J. Bohnet;Zilong Chen;J. K. Thompson
中科院分区:
其他
文献类型:
--
作者:
J. Weiner;K. Cox;J. Bohnet;Zilong Chen;J. K. Thompson

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我们展示了一个原理验证磁力计,它依赖于冷原子拉曼激光器的主动振荡,连续映射到辐射光的相位上的场敏感原子相位。我们展示了连续主动振荡过程中的宽带灵敏度,以及在被动拉姆齐样模式中的窄带灵敏度,其中使用自旋回波技术在频率中平移窄带检测。该传感器在1 kHz时的灵敏度为190 pT/Hz^(1/2),有效感测体积为2 * 10^-3 mm^3。也被认为是一个理想的检测器的磁场灵敏度的基本量子限制。
We demonstrate a proof-of-principle magnetometer that relies on the active oscillation of a cold atom Raman laser to continuously map a field-sensitive atomic phase onto the phase of the radiated light. We demonstrate wideband sensitivity during continuous active oscillation, as well as narrowband sensitivity in passive Ramsey-like mode with translation of the narrowband detection in frequency using spin-echo techniques. The sensor operates with a sensitivity of 190 pT/Hz^(1/2) at 1 kHz and effective sensing volume of 2 * 10^-3 mm^3. Fundamental quantum limits on the magnetic field sensitivity of an ideal detector are also considered.