Quantum measurements of spatial conjugate variables: displacement and tilt of a Gaussian beam.
نویسندگان
چکیده
We consider the problem of measurement of optical transverse profile parameters and their conjugate variable. Using multimode analysis, we introduce the concept of detection noise modes. For Gaussian beams, displacement and tilt are a pair of transverse-profile conjugate variables. We experimentally demonstrate the optimal encoding and detection of these variables with a spatial homodyning scheme. Using higher-order spatial mode squeezing, we show the sub-shot-noise measurements for the displacement and tilt of a Gaussian beam.
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ورودعنوان ژورنال:
- Optics letters
دوره 31 10 شماره
صفحات -
تاریخ انتشار 2006