• Corpus ID: 51960421

Ultimate limit of quantum beam tracking

  title={Ultimate limit of quantum beam tracking},
  author={Haoyu Qi and Kamil Br'adler and Christian Weedbrook and Saikat Guha},
  journal={arXiv: Quantum Physics},
Tracking small transverse displacements of an optical beam with ultra-high accuracy is a fundamental problem underlying numerous important applications ranging from pointing, acquisition and tracking for establishing a lasercom link, to atomic force microscopy for imaging with atomic-scale resolution. Determining what is the optimal quantum-optical probe and the best achievable sensitivity of measuring a small transverse optical beam displacement, is the fundamental question central to these… 

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