Linear optical realization of universal unambiguous discrimination of quantum state
Lin Qing, 福建省华侨大学厦门校区信息科学与工程学院,厦门 361021 · Acta Physica Sinica · 2009
In this letter, we propose an experimental scheme of universal unambiguous discrimination with only linear optical elements and the coincidence measurements. In addition, a modified scheme is presented to increase the success probability with ancillary photons. This scheme is feasible by current experimental technology and may be used in quantum cryptography.