Although the possible existence at the quantum scale wormholes (?? tunnels that connect different regions of spacetime), combined with the exotic phenomenon of quantum entanglement, do not allow passengers to travel send time itself could be based on a kind of quantum computer capable of solving mathematical problems whose solution is unattainable today.
If possible send bits of information to the past, which in theory would be much easier to achieve that send material objects, that might be the key to solving mathematical problems currently insoluble, even though at that time no one could access the information sent from the future. This is the conclusion of an international team that recently presented the results of their research.
This hypothetical message sent to the past and not open for anyone there can be extremely useful if the experimenter quantum intertwined with some other system in the laboratory before sending. Quantum entanglement, a strange effect only possible in the realm of quantum physics, would create correlations between the message that travels through time and in the laboratory system is intertwined with that quantum message. These correlations can feed a quantum computer.
Ten years ago, the researcher Dave Bacon, now at Google, showed that a quantum computer that is worth of this hypothetical effect of time travel could be resolved quickly mathematical problems of a kind that mathematicians have assumed too difficult to solve
However, there was a seemingly insurmountable obstacle. Bacon quantum computer would be traveling through tight curves similar to ?? time ??, which are paths through the fabric of space-time that fold back on themselves. General relativity allows the existence of such pathways through contortions in space-time called wormholes. But physicists argue that something must prevent the emergence of such opportunities because threaten causality (the cause-effect order); In a classic example, someone could travel back in time and kill your grandfather, making it impossible for its own existence).
And there are only family ties which would be threatened. Break the causal flow of time also has negative implications for quantum computing itself, crippling the work of a computer of that kind.
However, new research shows that a quantum computer can solve intractable problems even if travels along those curves like the flow of time, since in its open mode ?? ?? not create problems of causality, unlike closed mode ?? ??. This is because these open curves do not allow direct interaction with any object’s own past: the particles traveling in time (or the data they contain) never interact with themselves. However, it left intact the strange quantum properties that allow computations ?? ?? impossible. So, the team of Gu Mile, the Centre for Quantum Technology (CQT) at the National University of Singapore, classical paradoxes, such as killing one’s grandfather avoided, but still extraordinary results obtained.
The study experts have also worked at the University of Oxford in the UK, the Australian National University in Canberra, and the University of Queensland in St. Lucia, Australia.
Source: http://noticiasdelaciencia.com/
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