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Experts are getting closer and closer to creating an ultra-secure, cutting-edge quantum internet. Scientists have now successfully teleported quantum information over 44 km.
Data fidelity (data accuracy) and transfer distance are two key elements in building a functioning quantum internet – considered the cornerstone of the next generation communications infrastructure.
The team confirmed that they achieved a loyalty level of over 90% with their quantum information.
Dr Panagiotis Spentzouris, physicist in Caltech’s Fermilab Accelerator and Particle Physics Laboratory, said he was delighted with the success of the tests.
He said: “This is a key achievement on the way to building a technology that will redefine the way we conduct global communication.”
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Quantum Internet technology uses strange, unmeasured particles suspended in a mixture of possible states, much like spinning dice yet to be adjusted.
Although the dice rolled are theoretically able to fix on any number, they are both guaranteed to form a total sum, regardless of their distance from each other.
Data from one location is therefore considered to instantly mirror data from another, regardless of distance.
When presented to each other, qubits see their identities “entangled” in such a way that they are only understood when measured.
Ingenious arrangements entangling three qubits can force the state of one particle to adopt the potentiality of another through their mutually entangled partner.
In the quantum universe, this is like turning one particle into another, meaning that identity is almost instantly teleported away.
However, such an entanglement still needs to be first established, before being maintained as the qubits are sent to their final destination via optical fibers or even orbiting satellites.
And the bizarre nature of quantum information makes it very difficult to transfer entangled photons over long distances without interference.
Longer optical fibers mean an increased possibility for noise to interfere with entangled states.
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The latest experiment saw 44 km of fiber channeling every cubit, setting a new record for transmitting entangled qubits to successfully teleport quantum data.
But despite the fact that it has never been shown before to work accurately over such distances, experts believe that years of work still need to be done before commercial applications are realized.
Dr Spentzouris said, “With this demonstration, we are starting to lay the groundwork for building a metropolitan quantum network in the Chicago area.”
Quantum entanglement and data teleportation are so complex that many experts don’t fully understand how science can be harnessed to create a quantum network.
Some suggest that the technology promises almost unimaginable increases in speed and computing power.
And a quantum internet could also be ultra-secure, which means that hacking attempts would simply destroy the selected lock.
For now, however, experts predict that quantum internet networks will act more fundamentally as specialized extensions of the current embodiment of the internet.
What makes this study special is the accuracy and distance of quantum entanglement teleportation – and commonly used equipment – means that it should be relatively easy to extend this technology using the hardware already in existence. square.
Professor Maria Spiropulu, another physicist from Caltech, said: “We are very proud to have taken this important step in sustainable, efficient and scalable quantum teleportation systems.
“The results will be further improved with the system upgrades that we plan to complete by the second quarter of 2021.”
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