How to retrieve information from inside the black hole

The mystery of the black hole's physical state is about to be discovered when American physicists find a way to get information from inside these black holes.

Gravity inside a black hole is so strong that even light cannot escape, and according to the physics theory, quantum particles entering the black hole cannot escape. This makes it impossible for scientists to accurately predict the evolution of black holes as well as what is actually happening within it.

Quantum physics theory says that information about the universe does not disappear completely. However, scientists have not been able to answer what happened to the information in the black hole.

Radiation around a black hole and event horizon.(Photo: NASA).

According to Science Alert, by using a technique similar to quantum displacement, researchers at the California Institute of Technology (Caltech) can record information about a quantum unit (qubit) in a black hole. If there are enough measurements and observations in the black hole, it is possible for scientists to determine the state of this qubit. Although this information is not much, it marks a promising start before obtaining more data.

This result is based on Stephen Hawking's theory of black hole radiation . A black hole radiates and gradually evaporates, and its size shrinks. Previously, scientists believed that this phenomenon was merely thermal radiation . However, a recent idea is that this radiation contains information about the content of the black hole. If the new hypothesis is correct, the information about each particle falling into the black hole can be measured through an associated particle on the other side of the event horizon, the boundary of the black hole.

Like many other black hole studies, the discovery is only a hypothesis at the present time, but it provides the basis for experiments to help us understand more about black holes.

"It may be that information is stored in the residual state of Hawking radiation , although it is difficult to distinguish it from a thermal state," said researcher Aidan Chatwin. "In finite and special cases, you can throw a qubit into the black hole and then restore its state, along with the information it carries."