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According to a theoretical paper published in the Annals of Physics, by Dr. Ovidiu Racorean from the General Direction of Information Technology in Bucharest, Romania, the geometry of spacetime around a rapidly spinning black hole (Kerr black hole) behaves like a quantum computer, and it can encode photons with quantum messages.

In the race to build a scalable quantum computer, devices that use beams of light to carry the quantum information are among the frontrunners.


This is because it is easy to use photons’ degrees of freedom to encode quantum bits (qubits) that are the standard information units in quantum computing.


The term ‘degrees of freedom’ refers to those properties of the photons that take values that can be used in an equivalent manner to the ‘0’ and ‘1,’ in classical computers.


“In this research, we use polarization and orbital angular momentum (OAM) of photons as the carriers of quantum bits,” Dr. Racorean said.


“The distorted geometry of spacetime near rotating black holes can create and manipulate quantum information encoded in beams of light that are emitted by, or that pass close to, these black holes.”


“This is similar to the process that happens in a theoretical quantum computer."

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Category: Science