Unfortunately, after publication, we found some misprints in Eur. Phys. J. Plus (2020) 135: 253. We list them here because their number is not few.After publication of paper [1], in which signal-to-quantum noise ratios, Mandel parameters and the second-order correlation functions have been investigated, the authors realized that some relations in Eqs. (5a), (5b), (14b), ( 14c) and ( 16a)-(16d) needed to be corrected. Their corrected versions are as the following, respectively:
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