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arXiv quant-ph/0001072quant-ph
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存在交流斯塔克位移时光测磁的量子极限

Quantum limit of optical magnetometry in the presence of ac-Stark shifts

M. Fleischhauer, A. B. Matsko, M. O. Scully

摘要:

我们分析系统(经典)和基本(量子)的限制,导致交流斯塔克位移的光学磁力计的灵敏度。我们表明,在基于吸收的技术相比,与经典加宽的信号减少可以补偿在磁力计的基础上使用电磁感应透明(EIT)的相位测量。然而,由于交流斯塔克相关的量子噪声的信噪比的EIT为基础的磁强计达到一个最大值在一定的激光强度。该值与光的量子统计无关,并定义了灵敏度的标准量子极限。我们证明,法拉第配置的基于EIT的光学磁力计是实现最高磁场检测灵敏度的最佳候选方案,并对此类设备进行了详细分析。

英文摘要:

We analyze systematic (classical) and fundamental (quantum) limitations of the sensitivity of optical magnetometers resulting from ac-Stark shifts. We show that in contrast to absorption-based techniques, the signal reduction associated with classical broadening can be compensated in magnetometers based on phase measurements using electromagnetically induced transparency (EIT). However due to ac-Stark associated quantum noise the signal-to-noise ratio of EIT-based magnetometers attains a maximum value at a certain laser intensity. This value is independent on the quantum statistics of the light and defines a standard quantum limit of sensitivity. We demonstrate that an EIT-based optical magnetometer in Faraday configuration is the best candidate to achieve the highest sensitivity of magnetic field detection and give a detailed analysis of such a device.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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