Aliens could be sending quantum messages, study claims

Researchers have suggested that we may be listening out for the wrong type of e̳x̳t̳r̳a̳t̳e̳r̳r̳e̳s̳t̳r̳i̳a̳l̳ communications.

For decades, efforts to scour the heavens for signs of intelligent a̳l̳i̳e̳n̳ communications have focused on picking up traditional radio signals, however it is actually far more likely that an e̳x̳t̳r̳a̳t̳e̳r̳r̳e̳s̳t̳r̳i̳a̳l̳ c̳i̳v̳i̳l̳i̳z̳a̳t̳i̳o̳n̳ sufficiently advanced to be capable of traveling between the stars will have developed methods of communication that are far more practical over such enormous distances.

Even communicating with our own space probes in orbit around planets within our own solar system can be a long-winded process, with messages taking minutes or even hours to travel back and forth.

Sending a message between two solar systems would be exponentially worse, with even a single message taking years or decades to reach the closest star systems.

One theoretical way around this would be to find a way to send messages via quantum entanglement (a phenomenon in which the state of one particle in an entangled pair can be changed instantly over a distance.)

While such communication has yet to be achieved on Earth (physicists question whether it is actually possible to send any data at all via quantum entanglement), it is not unreasonable to imagine that an a̳l̳i̳e̳n̳ c̳i̳v̳i̳l̳i̳z̳a̳t̳i̳o̳n̳ might have been able to master it (or perhaps some variation of it).

Another possibility would be to use quantum particles to send information (a form of quantum communication that is currently subject to experimentation on Earth in the hope of creating ultra-secure networks).

According to a new study, quantum communication has the potential to work over vast distances through space – not only across solar systems, but also across galaxies.

If this is true, then if we actually had a way to pick up such communications, we could potentially be privy to an entire intergalactic network of messages from all corners of the universe.

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