Quantum measurements of spatial conjugate variables: Displacement and tilt of a Gaussian beam
Quantum Physics
2009-11-11 v1
Abstract
We consider the problem of measurement of optical transverse profile parameters and their conjugate variable. Using multi-mode 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 their optimal encoding and detection 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.
Keywords
Cite
@article{arxiv.quant-ph/0512151,
title = {Quantum measurements of spatial conjugate variables: Displacement and tilt of a Gaussian beam},
author = {Vincent Delaubert and Nicolas Treps and Charles C. Harb and Ping Koy Lam and Hans A. Bachor},
journal= {arXiv preprint arXiv:quant-ph/0512151},
year = {2009}
}
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3 pages