Affordable Access

Access to the full text

Quantum limits to estimation of photon deformation

  • De Cillis, Giovanni
  • Paris, Matteo G. A.
Published Article
Publication Date
Jul 08, 2014
Submission Date
Jul 06, 2014
DOI: 10.1142/S0219749914610097
External links


We address potential deviations of radiation field from the bosonic behaviour and employ local quantum estimation theory to evaluate the ultimate bounds to precision in the estimation of these deviations using quantum-limited measurements on optical signals. We consider different classes of boson deformation and found that intensity measurement on coherent or thermal states would be suitable for their detection making, at least in principle, tests of boson deformation feasible with current quantum optical technology. On the other hand, we found that the quantum signal-to-noise ratio (QSNR) is vanishing with the deformation itself for all the considered classes of deformations and probe signals, thus making any estimation procedure of photon deformation inherently inefficient. A partial way out is provided by the polynomial dependence of the QSNR on the average number of photon, which suggests that, in principle, it would be possible to detect deformation by intensity measurements on high-energy thermal states.

Report this publication


Seen <100 times