Extract information from a Black Hole
A Black Hole is a certain region in space that exhibits extremely powerful gravitational filed to the point that even light cannot escape from its gravitational force. An apparently direct consequence of the nature of a Black Hole is that if a particle happens to be sucked into it, any information about the particle would be lost as retrieving such information seems impossible.
What is fundamentally interesting about this problem is that retrieving information from a black hole seems impossible as far as we are concerned, yet based on two principles of quantum physics quantum determinism and Reversibility- information must always be conserved. These two conditions seem to oppose each other, leading to the well known Black Hole information paradox.
The problem of retrieving information from a black hole has bugged physicists for so many years now, with many theories being put forward as to how we can undertake this problem. One of the latest of such theories was published earlier this year by researchers from Cornell University.
These researchers found inspiration from a phenomenon known as Quantum entanglement. Quantum entanglement suggests that there are some particles in the universe that happen to be ‘linked’. This means that if 2 parties A and B to be linked, we cannot describe the state of particle A independent of the state of particle B.
Based on these pieces of information, the researchers suggested that if two particles were quantum entangled, say A and B again, and we send particle A into a black hole, we might be able to get information about the state of particle A by measuring the state of particle B.
Of course this is still a theory but the direct implications of this can easily be seen. Being able to measure information from just one particle might be a stepping stone for even more interesting achievements in this area. But not everyone is quite supportive of the idea so it will be interesting to see whether these researchers can take their work to even greater heights.
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