标题： 速度计作为力的量子非破坏性测量装置 显示英文标题

标题： Speed Meter As a Quantum Nondemolition Measuring Device for Force

摘要： 量子噪声是高级LIGO的一个重要问题。 尽管在原则上有可能超越标准量子极限（SQL），但迄今为止还没有找到实际的解决方案。 本文讨论了在速度计——一种监测测试质量速度的装置——背景下量子噪声的问题。 在这种情况下，提出的克服SQL的方案可能比基于监测测试质量位置的方法更实用。 显示英文摘要

摘要： Quantum noise is an important issue for advanced LIGO. Although it is in principle possible to beat the Standard Quantum Limit (SQL), no practical recipe has been found yet. This paper dicusses quantum noise in the context of speedmeter-a devise monitoring the speed of the testmass. The scheme proposed to overcome SQL in this case might be more practical than the methods based on monitoring position of the testmass.