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Working paper

N-sequential Conclusive State Discrimination in a General Case

Working papers by Cornell University. arXiv: quant-ph. Cornell University, 2020. No. 2102.04747.
In the present article, we introduce a general framework for the description of an N-sequential state discrimination, where each of N receivers always obtains a conclusive result. We prove that if one of two states, pure or mixed, is prepared by a sender, then the optimal success probability for an N-sequential conclusive state discrimination is given by the Helstrom bound for any number N of sequential receivers. Furthermore, we specify receivers' indirect measurements resulting in the optimal N-sequential conclusive state discrimination protocol.