Researchers were able to produce two minuscule simulated black holes and send a message between them. No actual rupture of space and time was created in the experiment, and scientists are a long way from being able to send living beings through such a portal.
In science fiction – think films and television shows like Interstellar and Star Trek – wormholes in the cosmos serve as portals through space and time for spacecraft to traverse unimaginable distances with ease. If only it were that simple.
Scientists have long pursued a deeper understanding of wormholes and now appear to be making progress.
Researchers announced on Wednesday that they forged two minuscule simulated black holes – those extraordinarily dense celestial objects with gravity so powerful that not even light can escape – in a quantum computer and transmitted a message between them through what amounted to a tunnel in space-time.
It was a “baby wormhole,” according to Caltech physicist Maria Spiropulu, a co-author of the research published in the journal Nature. But scientists are a long way from being able to send people or other living beings through such a portal, she said.
“So don’t hold your breath about sending your dog through the wormhole. But you have to start somewhere. And I think to me it’s just exciting that we’re able to get our hands on this at all.”
The researchers observed the wormhole dynamics on a quantum device at Alphabet’s Google called the Sycamore quantum processor.
A wormhole – a rupture in space and time – is considered a bridge between two remote regions in the universe. Scientists refer to them as Einstein–Rosen bridges after the two physicists who described them – Albert Einstein and Nathan Rosen.
Such wormholes are consistent with Einstein’s theory of general relativity, which focuses on gravity, one of the fundamental forces in the universe. The term “wormhole” was coined by physicist John Wheeler in the 1950s.
Spiropulu said the researchers found a quantum system that exhibits key properties of a gravitational wormhole but was small enough to implement on existing quantum hardware.
“It looks like a duck, it walks like a duck, it quacks like a duck. So that’s what we can say at this point – that we have something that in terms of the properties we look at, it looks like a wormhole,” Lykken said.
The researchers said no rupture of space and time was created in physical space in the experiment, though a traversable wormhole appeared to have emerged based on quantum information teleported using quantum codes on the quantum processor.
“These ideas have been around for a long time and they’re very powerful ideas,” Lykken said.
“But in the end, we’re in experimental science, and we’ve been struggling now for a very long time to find a way to explore these ideas in the laboratory. And that’s what’s really exciting about this. It’s not just, ‘Well, wormholes are cool.’ This is a way to actually look at these very fundamental problems of our universe in a laboratory setting.”
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