https://doi.org/10.1140/epjp/s13360-022-03594-7
Regular Article
Detecting nonclassicality via Gaussian noise channel
1
Academy of Mathematics and Systems Science, Chinese Academy of Sciences, 100190, Beijing, China
2
School of Mathematical Sciences, University of Chinese Academy of Sciences, 100049, Beijing, China
Received:
24
August
2022
Accepted:
11
December
2022
Published online:
28
December
2022
By exploiting the decoherent effect of Gaussian noise channel, we formulate a simple approach to quantifying optical nonclassicality of an optical state in terms of Wick-ordered characteristic function. We present a family of quantifiers of single-mode bosonic nonclassicality, which have many desirable properties. We further illustrate the quantifiers by several typical states. Our approach can also be generalized to the multi-mode cases.
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