Quantumness Near the Schwarzschild Black Hole Based on W‐State

Abstract The certain quantumness in the vicinity of the Schwarzschild black hole is investigated by utilizing the W state. The influence of the Hawking effect on the ‐norm of quantum coherence, first‐order coherence (FOC) is explored, concurrence‐fill (CF) and global concurrence (GC) in Schwarzschild black hole, for systems with one, two and three physically accessible modes. It is concluded that the Hawking effect not only perturbs but also amplifies the quantum entanglement, while destroying the quantum coherence for systems with three physically accessible modes. For systems with one or two physically accessible modes, the Hawking effect has a beneficial effect on quantum coherence and entanglement. Moreover, the influence of both the Hawking effect and environmental noise (AD channels) on ‐norm of quantum coherence, FOC, CF and GC is studied. It is demonstrated that for systems with three physically accessible modes, the Hawking effect disrupts quantum coherence but exerts a positive influence on quantum entanglement under the AD channels. The remaining two scenarios exhibit the same behavior as the previous conclusions.