SU(1,1)非线性干涉仪与位相精密测量

来源 :第十七届全国原子与分子物理学术会议 | 被引量 : 0次 | 上传用户:my61005122
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SU(1,1)非线性干涉仪是基于光学参量放大器的测量仪器.我们在理论上用平衡零拍探测法研究了一个输入端注入相干态,另一个输入端注入压缩态情况下,SU(1,1)非线性干涉仪的位相测量精度.我们发现非线性干涉仪的相对测量精度并不总是随着注入压缩真空的压缩强度增大或随着注入相干态光强的增强而变好;而是在压缩真空的压缩强度、相干态光强以及光学参量增益在适当匹配的条件下,其相对测量精度可以接近海森堡极限,我们给出了最优的测量条件.
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