https://doi.org/10.1140/epjc/s10052-025-14516-z
Regular Article - Theoretical Physics
Quantum steering of GHZ and W states in relativistic motion
Department of Physics, Liaoning Normal University, 116029, Dalian, China
Received:
8
June
2025
Accepted:
9
July
2025
Published online:
21
July
2025
We investigate tripartite quantum steering dynamics in a three-Unruh–DeWitt-detector system, examining both 
(i.e., from Alice to Bob and Charlie) and 
steering (i.e., from Alice and Bob to Charlie) configurations under two paradigmatic entangled initial states: the Greenberger–Horne–Zeilinger (GHZ) and W states. Our analysis demonstrates that steering exhibits better resistance to Unruh decoherence than steering. Notably, the steering of the W state displays a non-monotonic dependence on the acceleration parameter, indicating that the Unruh effect can, in certain regimes, enhance quantum steering. These results suggest that the Unruh effect plays a dual role in tripartite quantum systems, as it can both enhance and degrade quantum steering. Consequently, moving beyond the conventional interpretation of the Unruh effect as merely a source of decoherence, our study provides a new insight by exploring tripartite quantum steering in a relativistic setting.
© The Author(s) 2025
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Funded by SCOAP3.
