Experimental optimal maximum-confidence discrimination and optimal unambiguous discrimination of two mixed single-photon states
Gesine A. Steudle, Sebastian Knauer, Ulrike Herzog, E. Stock, Vladimir Anatolievich Haisler, D. Bimberg, Oliver J. Benson · Physical Review A · 2011
We present an experimental implementation of optimum measurements for quantum state discrimination. Optimum maximum-confidence discrimination and optimum unambiguous discrimination of two mixed single-photon polarization states were performed. For the latter the states of rank 2 in a four-dimensional Hilbert space are prepared using both path and polarization encoding. Linear optics and single photons from a true single-photon source based on a semiconductor quantum dot are utilized.