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This research demonstrates that quantum teleportation fidelity can remain above the classical threshold near black hole horizons if derived from W-class states, offering theoretical resilience against Hawking radiation and spacetime curvature. The study provides critical insights into maintaining quantum communication protocols in extreme gravitational environments by leveraging specific entangled state structures.
Resilience of Quantum Teleportation Fidelity for Bipartite Mixed States near Schwarzschild and Dilaton Black Holes
arXiv:2501.06484v4 Announce Type: replace Abstract: We investigate the robustness of quantum teleportation in the presence of strong gravitational fields by analysing bipartite mixed states derived from tripartite GHZ and W-class states near black hole event horizons. Considering a scenario where two observers approach the horizon of either a Schwarzschild or a Garfinkle Horowitz Strominger (GHS) Dilaton black hole while a third remains in flat space, we quantify the teleportation fidelity of the resulting bipartite channels after tracing out one party. Through the quantization of Dirac fields and Bogoliubov transformations, we compute the teleportation fidelity under the influence of Hawking radiation and spacetime curvature. Our results show that while entanglement degrades, teleportation fidelity remains above the classical threshold of $f>\frac{2}{3}$ for channels derived from W-class states, but not for GHZ-derived states. This indicates that quantum teleportation can remain feasible near black holes provided the initial entangled state retains useful bipartite entanglement.
Abstract:We investigate the robustness of quantum teleportation in the presence of strong gravitational fields by analysing bipartite mixed states derived from tripartite GHZ and W-class states near black hole event horizons. Considering a scenario where two observers approach the horizon of either a Schwarzschild or a Garfinkle Horowitz Strominger (GHS) Dilaton black hole while a third remains in flat space, we quantify the teleportation fidelity of the resulting bipartite channels after tracing out one party. Through the quantization of Dirac fields and Bogoliubov transformations, we compute the teleportation fidelity under the influence of Hawking radiation and spacetime curvature. Our results show that while entanglement degrades, teleportation fidelity remains above the classical threshold of $f>\frac{2}{3}$ for channels derived from W-class states, but not for GHZ-derived states. This indicates that quantum teleportation can remain feasible near black holes provided the initial entangled state retains useful bipartite entanglement.
arXiv:2501.06484 [quant-ph]
(or arXiv:2501.06484v4 [quant-ph] for this version)
https://doi.org/10.1088/1361-6382/ae60da DOI(s) linking to related resources
From: Sovik Roy Dr. [view email] [v1] Sat, 11 Jan 2025 08:35:16 UTC (642 KB) [v2] Thu, 29 Jan 2026 05:46:45 UTC (600 KB) [v3] Fri, 17 Apr 2026 10:29:55 UTC (602 KB) [v4] Wed, 2 Sep 2026 04:53:30 UTC (602 KB)
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