Abstract
We adequately characterize the distillability of quantum coherence under the maximally incoherent operations (MIO) in the probabilistic distillation’s framework. In particular, we prove that every non-full-rank coherent state exhibits a nonzero probability in the task of probabilistic deterministic distillation. Moreover, we find that the maximal coherence, a computable coherence monotone under strictly incoherent operations (SIO), is a coherence monotone under incoherent operations (IO) and add the proof that the maximal coherence fulfills strong monotonicity under SIO. It is suggested that the maximal success probability of distillation from all coherent states whose density matrix does not contain any rank-one submatrix is less than 1 under IO and equals 0 under SIO. Finally, we present an explicit example for probabilistic distillation under IO and show that a class of non-full rank 3-dimensional states possesses the probabilistic distillability.
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Acknowledgements
We thank Chenming Bai, Yufeng Lian, and Shanshan Yuwen for fruitful discussions. This paper was supported by National Science Foundation of China (Grant No:11671244, 11271237), the Higher school Doctoral Subject Foundation of Ministry of Education of China (Grant No:20130202110001), the Central Universities (Grant No: GK202003070) and the National Natural Science Foundation of China (Grant No: 62001274).
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Li, P., Luo, Y. & Li, Y. Distillability for non-full-rank coherent states in the probabilistic framework. Quantum Inf Process 19, 374 (2020). https://doi.org/10.1007/s11128-020-02782-7
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DOI: https://doi.org/10.1007/s11128-020-02782-7