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在负质量参考框架中的量子反作用逃避运动测量
Christoffer B Møller1, Rodrigo A Thomas1, Georgios Vasilakis1,2
1Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark.
Nature
|July 14, 2017
概括
研究人员通过使用原子自旋振荡器来逃避机械振荡器的量子反作用 (QBA). 这一突破使得传感运动和力量的精度提高, 可能使量子通信超出标准的量子极限.
科学领域:
- 量子力学
- 量子光学
- 视觉机械
背景情况:
- 连续测量位置导致量子反作用 (QBA),限制了根据海森堡不确定性原理的运动感应精度.
- 标准量子极限限制了位置,速度和加速测量的准确性.
研究的目的:
- 在宏观机械振荡器上演示QBA的逃避.
- 探索混合量子系统, 结合机械和自旋振荡器,
主要方法:
- 使用介电膜机械振荡器和原子集体自旋振荡器的混合系统.
- 在混合系统上使用光进行集体量子测量.
- 在负有效质量和正有效质量设置中配置旋转振荡器.
主要成果:
- 在负质量设置中达到1.8分贝的QBA抑制.
- 在正质量设置中观察到2. 4分贝的QBA增强.
- 证明了规避标准的量子限制.
结论:
- 在混合量子系统中避开QBA为超出标准量子极限的精确传感开辟了新的途径.
- 这项工作促进了遥远的机械和自旋系统之间的纠生成和量子通信.
- 开发的系统有可能在力,运动和重力感应方面有先进的应用.
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