Loss-error compensation in quantum-state measurements
Giacomo Mauro D’Ariano, Chiara Macchiavello · Physical Review A · 1998
In the two papers [T. Kiss, U. Herzog, and U. Leonhardt, Phys. Rev. A 52, 2433 (1995); U. Herzog, Phys. Rev. A 53, 1245 (1996)] with titles similar to the one given above, the authors assert that in some cases it is possible to compensate a quantum efficiency $\ensuremath{\eta}1/2$ regime.