量子力学. 量子力学. 这就是量子力学. 机械检测和避免微波场的量子波动
J Suh1, A J Weinstein1, C U Lei1
1Applied Physics, California Institute of Technology, Pasadena, CA 91125, USA. Kavli Nanoscience Institute, California Institute of Technology, Pasadena, CA 91125, USA.
Science (New York, N.Y.)
|May 17, 2014
概括
研究人员使用反射逃避测量方法减少了超导电机械设备中的量子反射噪声. 这一突破提高了对超敏感力检测和研究量子运动的灵敏度.
科学领域:
- 量子光学就是量子光学.
- 量子力学就是量子力学.
- 固态物理 固态物理
背景情况:
- 光场中的量子波动会引起反作用力,限制测量灵敏度.
- 反作用逃避 (量子不破坏) 测量通过牺牲完整的运动知识来避免这些力量.
研究的目的:
- 演示连续的两色反作用逃避测量.
- 检测微波场量子噪声的反作用力.
- 减少量子反作用噪声和测量不准确性.
主要方法:
- 使用了一种超导电机械装置.
- 实施连续两色测量技术.
- 在机械零点波动以下测量了正方形不精确性.
主要成果:
- 成功检测到微波量子噪声的反作用力.
- 在量子反作用噪声中实现了8.5 ± 0.4分贝 (dB) 的降低.
- 在零点波动以下达到2.4 ± 0.7dB的测量不精度.
结论:
- 连续的双色反作用逃避测量克服了量子噪声的限制.
- 这种技术对于超敏感力测量至关重要.
- 能够研究非经典运动状态.
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