Abstract
In this paper, a new state called superposition of three-mode photon-added trio coherent state is introduced and its nonclassical properties are studied. Based on the negative values of the Wigner function, we find that the nonclassical as well as non-Gaussian characteristics of the superposition of three-mode photon-added trio coherent state are more obvious than that of the original trio coherent state. The superposition of three-mode photon-added trio coherent state always appears three-mode sum squeezing while the trio coherent state does not. It also shows that the superposition of three-mode photon-added trio coherent state is genuinely entangled. The entanglement degree of this state is more improved compared with the trio coherent state. It becomes bigger and bigger through nonlocally increasing the number of added photons.
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Acknowledgments
This research is funded by Vietnam Ministry of Education and Training (MOET) under grant number B2019-DHH-12.
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Dat, T.Q., Duc, T.M. Nonclassical Properties of the Superposition of Three-Mode Photon-Added Trio Coherent State. Int J Theor Phys 59, 3206–3216 (2020). https://doi.org/10.1007/s10773-020-04573-3
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DOI: https://doi.org/10.1007/s10773-020-04573-3
Keywords
- Photon-added states
- Nonclassical states
- Wigner function
- Sum squeezing
- Entanglement