Smith David D, Luckay H A, Chang Hongrok, Myneni Krishna
Space Systems Department, NASA Marshall Space Flight Center, ES34, Huntsville, AL 35812.
Torch Technologies, 4035 Chris Dr. Suite C, Huntsville, AL 35802.
Phys Rev A (Coll Park). 2016 Aug 16;Volume 94(Iss 2). doi: 10.1103/physreva.94.023828.
We demonstrate for a passive optical cavity containing a dispersive atomic medium, the increase in scale factor near the critical anomalous dispersion is not cancelled by mode broadening or attenuation, resulting in an overall increase in the predicted quantum-noise-limited sensitivity. Enhancements of over two orders of magnitude are measured in the scale factor, which translates to greater than an order-of-magnitude enhancement in the predicted quantum-noise-limited measurement precision, by temperature tuning a low-pressure vapor of non-interacting atoms in a low-finesse cavity close to the critical anomalous dispersion condition. The predicted enhancement in sensitivity is confirmed through Monte-Carlo numerical simulations.
我们证明，对于包含色散原子介质的无源光学腔，在临界反常色散附近比例因子的增加不会被模式展宽或衰减抵消，从而导致预测的量子噪声限制灵敏度整体增加。通过在低精细度腔中对接近临界反常色散条件的非相互作用原子的低压蒸汽进行温度调谐，测量到比例因子增强了两个多数量级，这转化为预测的量子噪声限制测量精度提高了一个多数量级。通过蒙特卡罗数值模拟证实了预测的灵敏度增强。
