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‘Wormhole’ built on quantum computer teleports information as predicted : ScienceAlert

‘Wormhole’ built on quantum computer teleports information as predicted : ScienceAlert

For the first time, scientists have created a quantum computing an experiment to study the dynamics of wormholes – that is, shortcuts through space-time that could bypass the cosmic speed limits of relativity.

Wormholes are traditionally the subject of science fiction, ranging from Jodie Foster’s Wild Ride Contact to the The time reversal gets complicated Interstellar. But the researchers behind the experiment, published in the December 1 issue of the magazine Naturethey hope their work will help physicists really study this phenomenon.

“We have found a quantum system that exhibits key properties of a gravitational wormhole, but is small enough to be implemented on today’s quantum hardware,” says Caltech physicist Maria Spiropulu said in a press release. Spiropoulos, the Nature senior author of the paper, is the principal investigator for a federally funded research program known as Quantum communication channels for fundamental physics.

Don’t pack your bags for Alpha Centauri just yet: this wormhole simulation is nothing more than a simulation, an analog one computer generated black hole or a supernova.

And physicists still don’t see the conditions under which a traversable wormhole could be created. Someone would have to create negative energy first.

Columbia theoretical physicist Peter Woit cautioned against getting too carried away with research.

“The claim that ‘physicists are creating a wormhole’ is just complete bullshit, with a huge campaign to mislead the public about it is a disgrace, very unhelpful to the credibility of physics research in particular and science in general,” he wrote on his blogwhich is called not even wrong.

The main goal of the research was to shed light on the concept known as quantum gravitywhich seeks to unify the theories of general relativity and quantum mechanics.

Those two theories do an excellent job of explaining how gravity works and how the subatomic world is structured, but they don’t match up well with each other.

One of the big questions centers on whether wormhole teleportation could follow the principles behind quantum ones entanglement.

That quantum phenomenon is better understood and even demonstrated in the real world, thanks to Nobel Prize-winning research: It involves connecting subatomic particles or other quantum systems in a way that allows what Albert Einstein called “spooky action at a distance.”

Spiropoulou and her colleagues, including lead authors Daniel Jafferis and Alexander Zlokapa, created a computer model that applies the physics quantum entanglement to wormhole dynamics.

Their program was based on a theoretical framework known as Sachdev-Ye-Kitaev modelor SYK.

The big challenge was that the program had to be executed on a as much as a computer. Google’s Sycamore quantum processing processor was powerful enough to undertake the task, with the assistance of conventional machine learning tools.

“We hired [machine] learning techniques to find and prepare a simple SYK-like quantum system that could be encoded in current quantum architectures and would preserve gravitational properties,” Spiropoulou he said.

“In other words, we simplified the microscopic description of the SYK quantum system and studied the resulting effective model we found on a quantum processor.”

The researchers inserted a quantum bit, or qubit, of encoded information into one of two entangled systems—and then watched the information emerge from the other system. From their perspective, it’s as if the qubit passed in between black holes through the wormhole.

“It took a really long time to get to the results, and we surprised ourselves with the outcome,” he said Caltech researcher Samantha Davis, one of the study’s co-authors.

The team found that the wormhole simulation allowed information to flow from one system to another when the computerized equivalent of negative energy was applied, but not when positive energy was applied instead. This matches what theorists would expect from a wormhole in the real world.

As quantum circuits become more complex, researchers aim to carry out higher-fidelity simulations of wormhole behavior – which could lead to new twists in fundamental theories.

“The relationship between quantum entanglement, spacetime and quantum gravity is one of the most important questions in fundamental physics and an active area of ​​theoretical research”, Spiropoulou he said.

“We’re excited to take this small step toward testing these ideas on quantum hardware, and we’ll continue.”

In addition to Jafferis, Zlokapa, Spiropoulou and Davis, the authors Nature paper, entitled “Dynamics of a traversable wormhole on a quantum processor,” include Joseph Lykken, David Kolchmeyer, Nikolaj Lauk and Hartmut Neven.

This article was originally published by The universe today. Read it original article.



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