A ‘wormhole’ built on a quantum computer teleported information as predicted: ScienceAlert

A ‘wormhole’ built on a quantum computer teleported information as predicted: ScienceAlert

For the first time, scientists have one quantum computing experiment for studying wormhole dynamics — that is, shortcuts through spacetime that can circumvent the cosmic speed limits of relativity.

Wormholes are traditionally the stuff of science fiction ranging from Jodie Foster’s Wild Ride Contact to the time-bending plot twists roll in Interstellar. But the researchers behind the experiment, reported in the Dec. 1 issue of the journal Naturehope their work will help physicists really study the phenomenon.

“We have found a quantum system that exhibits the key properties of a gravitational wormhole, yet is small enough to implement on today’s quantum hardware,” says Caltech physicist Maria Spiropulu. said in a press release. Spiropoulos, de Nature paper’s senior author, 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, analogous to one computer generated black hole or supernova.

And physicists still don’t see any conditions under which a traversable wormhole could actually be created. Someone should create negative energy first.

Peter Woit, theoretical physicist from Columbia, cautioned against paying too much attention to the research.

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

The main aim of the research was to shed light on a concept known as quantum gravitywho tries to unify the theories of general relativity and quantum mechanics.

Those two theories did a great job of explaining how gravity works and how the subatomic world is structured, respectively, but they don’t correlate well.

One of the big questions is whether wormhole teleportation could follow the principles behind quantum entanglement.

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

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

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

The big challenge was that the program had to be run on a as much as a computer. from Google Sycamore quantum processing chip was just powerful enough to take on the task, with assistance from conventional machine learning tools.

“We worked [machine] learning techniques to find and prepare a simple SYK-like quantum system that can be encoded in current quantum architectures and would retain gravity properties,” Spiropulu said.

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

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

“It took a very long time to get to the results, and we surprised ourselves with the outcome,” 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. That’s consistent with what theorists would expect from a real-world wormhole.

As quantum circuits become more complex, the researchers aim to perform simulations of wormhole behavior with higher fidelity, 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,” Spiropulu said.

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

In addition to Jafferis, Zlokapa, Spiropulu and Davis, the authors of the Nature paper titled “Traversable Wormhole Dynamics on a Quantum Processor,” include Joseph Lykken, David Kolchmeyer, Nikolai Lauk and Hartmut Neven.

This article was originally published by Universe Today. Read the original article.



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