Abstract

Realistic quantum systems are affected by the expanding universe in their preparation and quantum information processing. In this paper, we study the relationship between the Gaussian quantum steering distribution and the parameters of the expanding universe. The expansion process of the universe can be described as a channel acting on a two-mode squeezed Gaussian state, with the evolution of quantum steering from the asymptotic past to the asymptotic future resulting in new distributions parameterized by cosmic parameters. We find that Gaussian quantum steering is more sensitive to the volume change of the expanding universe than the expansion rate, and the Gaussian quantum steering generated by particles with suitable mass and small momentum is more affected by the expanding universe.

Details

Title
Gaussian quantum steering for continuous variables sharing in an expanding universe
Author
Wu, Hengyu 1 ; Gong, Xiaolong 1 ; Liu, Tonghua 1   VIAFID ORCID Logo  ; Wu, Shu-Min 2 

1  Yangtze University, School of Physics and Optoelectronic Engineering, Jingzhou, China (GRID:grid.410654.2) (ISNI:0000 0000 8880 6009) 
2  Liaoning Normal University, Department of Physics, Dalian, China (GRID:grid.440818.1) (ISNI:0000 0000 8664 1765) 
Pages
856
Publication year
2024
Publication date
Aug 2024
Publisher
Springer Nature B.V.
ISSN
14346044
e-ISSN
14346052
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1140/epjc/s10052-024-13226-2
ProQuest document ID
3097306216
Copyright
© The Author(s) 2024. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.