论文标题
定期驱动的光学机械的力敏感性和纠缠增强
Enhanced force sensitivity and entanglement in periodically driven optomechanics
论文作者
论文摘要
挤压是一种能够在量子计量学方面进行精确增强的资源，可以用作通过线性光学器件生成纠缠的基础。尽管强烈的挤压在光场中产生挑战，但在这里我们提出了光学机械系统中简单的周期性调制方案，这些协议可以生成其机械自由度的大量挤压，以实现现实的系统参数。然后，我们继续展示该方案如何用于提高弱力的测量精度，并增强受任何类型的弱相互作用的测试质量之间的纠缠产生。此外，可以将这些协议恢复以减少注入能量的量，同时保留生成的纠缠并使其对噪声更具弹性。我们介绍了工作中的原理，讨论其在各种物理环境中的应用，包括悬浮和束缚的机械谐波振荡器，以及对Casimir和引力力的示例应用。
Squeezing is a resource that enables precision enhancements in quantum metrology and can be used as a basis for the generation of entanglement by linear optics. While strong squeezing is challenging to generate in optical fields, here we present simple periodic modulation protocols in optomechanical systems that can generate large squeezing of their mechanical degrees of freedom for realistic system parameters. We then proceed to show how such protocols can serve to improve the measurement precision of weak forces and enhance the generation of entanglement between test masses that are subject to any kind of weak interaction. Moreover, these protocols can be reverted to reduce the amount of injected energy, while preserving the generated entanglement and making it more resilient to noise. We present the principle at work, discuss its application in a variety of physical settings, including levitated and tethered mechanical harmonic oscillators, and present example applications to Casimir and gravitational forces.
