Quantum state reconstruction of spectral field modes: Homodyne and resonator detection schemes

@article{Barbosa2013QuantumSR,
  title={Quantum state reconstruction of spectral field modes: Homodyne and resonator detection schemes},
  author={Felippe A. S. Barbosa and Antonio S. Coelho and Katiuscia Nadyne Cassemiro and Paulo A. Nussenzveig and Claude Fabre and Alessandro S. Villar and Marcelo Martinelli},
  journal={Physical Review A},
  year={2013},
  volume={88},
  pages={052113}
}
We revisit the problem of quantum state reconstruction of light beams from the photocurrent quantum noise. As is well-known, but often overlooked, two longitudinal field modes contribute to each spectral component of the photocurrent (sideband modes). We show that spectral homodyne detection is intrinsically incapable of providing all the information needed for the full reconstruction of the two-mode spectral quantum state. Such a limitation is overcome by the technique of resonator detection… 

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