What is it about?
The X-ray photons emitted by the accretion disks around rotating black holes are polarized and acquire orbital angular momentum, two degrees of freedom that can encode quantum information. Nevertheless, escaping the accretion disk, photons are passing throughout the extreme warped and twisted spacetime near spinning black holes suffering rotations of polarization angle and changes in the orbital angular moment. We conjecture that these changes in the angle of polarization and orbital angular momentum can implement elementary quantum gates and simple quantum circuits. Consequently, when detected by an asymptotic observer, the photons emitted near rotating black holes encode quantum information that can be measured by actual quantum information technology.
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Why is it important?
My findings show that deformed spacetime around spinning black holes can act like quantum computers, processing quantum information stored in some degrees of freedom of photons.
Perspectives
In perspective I expect to detect and measure the quantum information encoded in photons coming from rotating black holes.
Ovidiu Racorean
Read the Original
This page is a summary of: Spacetime manipulation of quantum information around rotating black holes, Annals of Physics, November 2018, Elsevier,
DOI: 10.1016/j.aop.2018.09.013.
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