Genuine tripartite entanglement of W state subject to Hawking effect of a Schwarzschild black hole

We study the genuine tripartite entanglement (GTE), one-tangle and two-tangle of W state of fermionic fields in the background of a Schwarzschild black hole. We find that, with the increase of the Hawking temperature, the GTE of W state first decreases and then tends to zero, while the GTE of GHZ st...

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Bibliographic Details
Published inEurophysics letters Vol. 141; no. 1; pp. 18001 - 18007
Main Authors Wu, Shu-Min, Fan, Xiao-Wei, Huang, Xiao-Li, Zeng, Hao-Sheng
Format Journal Article
LanguageEnglish
Published Les Ulis EDP Sciences, IOP Publishing and Società Italiana di Fisica 01.01.2023
IOP Publishing
Subjects
Entangled states
Freezing
Quantum entanglement
Quantum phenomena
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Summary:We study the genuine tripartite entanglement (GTE), one-tangle and two-tangle of W state of fermionic fields in the background of a Schwarzschild black hole. We find that, with the increase of the Hawking temperature, the GTE of W state first decreases and then tends to zero, while the GTE of GHZ state first decreases and then freezes. We also find that the Hawking effect can completely destroy the two-tangle of W state, while one-tangle first decreases and then the freezing phenomenon appears with the growth of the Hawking temperature. These results are helpful to guide us to select appropriate quantum states and quantum resources to deal with relativistic quantum information tasks.
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ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/acac4f