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This Breakthrough Could Fix One of Quantum Tech's Biggest Flaws
SciTechDaily ^ | March 28, 2025 | University of the Witwatersrand

Posted on 03/28/2025 6:24:38 PM PDT by SunkenCiv

In a study published on March 26 in Nature Communications, the team showed that certain quantum states can retain their essential information even when exposed to environmental "noise" that would normally disrupt them...

Quantum entanglement, the strange connection that allows particles to instantly affect each other regardless of distance, is central to many quantum technologies...

But despite its promise, entanglement is extremely fragile. In real-world settings, it can quickly break down due to background light, stray signals, imperfect detectors, or lost photons. These forms of environmental noise can sever the connection between entangled particles, making them useless for transmitting quantum information...

To overcome this, many strategies have been put forward to try and preserve the entanglement, but so far with very limited success. The Wits team has shown that this approach can be manipulated, allowing the entanglement to remain fragile and instead preserve the quantum information...

The researchers discovered that by engineering quantum states with specific topological properties, they could preserve quantum information even when the entanglement between particles begins to break down...

The team believes that just as digital technology has enabled successful classical computation and communication, so too will digital quantum signals allow successful quantum computation and communication under realistic conditions without the need for compensating strategies.

(Excerpt) Read more at scitechdaily.com ...


TOPICS: Astronomy; Science
KEYWORDS: astronomy; quantummechanics; science; stringtheory
Researchers find a way to shield quantum information from "noise."
Credit: Wits University, edited
Credit: Wits University, edited

1 posted on 03/28/2025 6:24:38 PM PDT by SunkenCiv
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To: 6SJ7; AdmSmith; AFPhys; Arkinsaw; allmost; aristotleman; autumnraine; bajabaja; ...
Thanks for the link. This topic seems likely to be analogous to a treeful of crap-flinging monkeys. :^) Y'know, that would have been a better title for that book...


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2 posted on 03/28/2025 6:26:29 PM PDT by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
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To: SunkenCiv

“lost photons”

Sounds like a promising TV Show.

Maybe the Dept. of Energy should put their Top Men on it.


3 posted on 03/28/2025 6:29:46 PM PDT by Paladin2
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To: Paladin2

Says how topology is so important, but doesn’t say anything about the topology. Now one has to go read the paper.


4 posted on 03/28/2025 6:38:15 PM PDT by glorgau
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To: SunkenCiv

I’ll wait until I read about it as an article in Physical Review...

Nature isn’t the best source for good science...


5 posted on 03/28/2025 6:50:21 PM PDT by SuperLuminal (Where is rabble-rising Sam Adams now that we need him? Is his name Trump, now?)
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To: SunkenCiv

Ursula K. Le Guin’s ansible. Uses quantum entanglement to set up instantaneous communications between any two points in space


6 posted on 03/28/2025 6:55:27 PM PDT by Texaspeptoman (Even cannibals... get fed up with people sometimes.)
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To: glorgau

Are there photon containment boxes that are commercially available?


7 posted on 03/28/2025 6:59:12 PM PDT by Paladin2
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To: Paladin2

“lost photons”? I’d be more worried about added photons.


8 posted on 03/28/2025 7:04:04 PM PDT by Qwapisking ("The left will rue the day they cheated Trump out of the 2020 election forever" L.Star )
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To: Qwapisking

Photon packing?

What will the ‘Rats think of next?

AOC needs to come clean.


9 posted on 03/28/2025 7:46:29 PM PDT by Paladin2
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To: Paladin2


"Sounds like a promising TV Show."


Or a Japanese music group. One of their strangest names is Bump of Chicken (not sure if they are still around).
10 posted on 03/28/2025 7:47:07 PM PDT by Bikkuri (I am proud to be a PureBlood.)
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To: Texaspeptoman

I liked her odd takes on sci-fi’s various standard hokus pokus.


11 posted on 03/28/2025 8:10:45 PM PDT by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
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To: Paladin2

Call it “Ghost Photons” and have hundreds of zombies and vampires in it, and it would probably go on for ten years. ;^)


12 posted on 03/28/2025 8:45:16 PM PDT by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
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