https://doi.org/10.1140/epjp/s13360-025-06259-3
Regular Article
Non-Gaussianity and entanglement swapping of two-mode entangled squeezed-coherent state
1
College of Physics, Electronics and Intelligent Manufacturing, Huaihua University, 418008, Huaihua, China
2
Hunan Provincial Key Laboratory of Ecological Agriculture Intelligent Control Technology, Huaihua University, 418008, Huaihua, China
Received:
25
September
2024
Accepted:
25
March
2025
Published online:
25
April
2025
We investigate the non-Gaussianity of two-mode entangled squeezed-coherent state by using an improved non-Gaussianity measure. It shows that the coherent amplitude and squeezing degree of two-mode entangled squeezed-coherent state have a distinct contribution to its non-Gaussianity. We also present a protocol of entanglement swapping based on two-mode entangled squeezed-coherent state. We can obtain two different classes of entangled states: two-mode entangled squeezed states and two-mode entangled coherent states, with the help of an intermediate partner. Finally, we discuss some practical implementation issues of our swapping scheme.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
