Iterative maximum-likelihood reconstruction in quantum homodyne tomography

  title={Iterative maximum-likelihood reconstruction in quantum homodyne tomography},
  author={A. I. Lvovsky},
  journal={Journal of Optics B-quantum and Semiclassical Optics},
  • A. Lvovsky
  • Published 14 November 2003
  • Mathematics
  • Journal of Optics B-quantum and Semiclassical Optics
I propose an iterative expectation maximization algorithm for reconstructing the density matrix of an optical ensemble from a set of balanced homodyne measurements. The algorithm applies directly to the acquired data, bypassing the intermediate step of calculating marginal distributions. The advantages of the new method are made manifest by comparing it with the traditional inverse Radon transformation technique. 

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