Black Hole Did Not Destroy Quantum Entanglement ⚡ экспресс
Researchers have studied quantum entanglement (a special interconnection) of a four-qubit cluster state in the curved spacetime of a Schwarzschild black hole. Contrary to the widespread belief that gravity destroys quantum correlations, it was found that maximum entanglement here remains fully intact as Hawking temperature rises — so-called 'freezing'. This is the first case of maximum entanglement being preserved in such an extreme environment. The discovery promises robust quantum protocols in the relativistic regime.
Fragile as ice in a furnace, quantum entanglement usually perishes from the slightest heat. Near a black hole, where space is twisted by Einstein's gravity and Hawking radiation Hawking's heats things up, any bond should be destroyed. But physicists found an exception. They took four specially prepared particles (a cluster state) and placed them near a black hole of Schwarzschild Schwarzschild. Force carrier particles (bosons) predictably lost their connection. But matter particles (fermions, like electrons) behaved differently: their entanglement remained exactly the same as it was at the start. Even as the black hole heated up, the bond did not weaken — it was maximal and unchanged.
This promises quantum communication and computation in space, where ordinary entanglement perishes from radiation and curved spacetime. The resilience of fermions opens the way to reliable information transfer even near massive objects. While the black hole evaporates and accumulates entropy (disorder), this does not affect the quartet.
🎯 The temperature of large black holes is billionths of a degree above absolute zero, yet even this tiny heating usually destroys quantum effects.