Compensation of losses in photodetection and in quantum-state measurements
T. Kiss, Ulrike Herzog, Ulf Leonhardt · Physical Review A · 1995
We show how losses in photodetection and in quantum-state measurements can be numerically compensated after the measurements have been performed. When the overall efficiency exceeds 1/2, our recipe works for all quantum states. For smaller efficiencies, however, the convergence of the compensation procedure depends on the quantum state under investigation.