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Arthur T Knackerbracket has found the following story:
For the first time, a team led by Innsbruck physicist Ben Lanyon has sent a light particle entangled with matter over 50 km of optical fiber. This paves the way for the practical use of quantum networks and sets a milestone for a future quantum internet.
The quantum internet promises absolutely tap-proof communication and powerful distributed sensor networks for new science and technology. However, because quantum information cannot be copied, it is not possible to send this information over a classical network.
In a nonlinear crystal illuminated by a strong laser the photon wavelength is converted to the optimal value for long-distance travel. Quantum information must be transmitted by quantum particles, and special interfaces are required for this. The Innsbruck-based experimental physicist Ben Lanyon, who was awarded the Austrian START Prize in 2015 for his research, is researching these important intersections of a future quantum Internet.
Now his team at the Department of Experimental Physics at the University of Innsbruck and at the Institute of Quantum Optics and Quantum Information of the Austrian Academy of Sciences has achieved a record for the transfer of quantum entanglement between matter and light. For the first time, a distance of 50 kilometers was covered using fiber optic cables.
"This is two orders of magnitude further than was previously possible and is a practical distance to start building inter-city quantum networks," says Ben Lanyon.
[...] With 100-kilometer node spacing now a possibility, one could therefore envisage building the world’s first intercity light-matter quantum network in the coming years: only a handful of trapped ion-systems would be required on the way to establish a quantum internet between Innsbruck and Vienna, for example.
[...] Light-matter entanglement over 50 km of optical fibre. V. Krutyanskiy , M. Meraner, J. Schupp, V. Krcmarsky, H. Hainzer and B. P. Lanyon. npj Quantum Information 2019 DOI: https://doi.org/10.1038/s41534-019-0186-3 (Open Access)
(Score: 2) by rylyeh on Sunday September 01 2019, @01:30AM (5 children)
(arms reaching out)
"I'm ready! Entangle me!"
Seriously, this is huge.
"a vast crenulate shell wherein rode the grey and awful form of primal Nodens, Lord of the Great Abyss."
(Score: 4, Insightful) by barbara hudson on Sunday September 01 2019, @02:32AM (4 children)
SoylentNews is social media. Says so right in the slogan. Soylentnews is people, not tech.
(Score: 2) by HiThere on Sunday September 01 2019, @06:06PM (2 children)
More to the point, it won't work past a repeater even on a wired connection. But that may be the next step...however it looks to me (a non-specialist) as an especially tricky one. Otherwise the signal could be copied at every amplifier stage it hits.
Javascript is what you use to allow unknown third parties to run software you have no idea about on your computer.
(Score: 2) by kazzie on Sunday September 01 2019, @08:55PM (1 child)
The fact that one can't use amplification en-route without breaking the entanglement (i.e. it's s passive optical network) is a major range limitation.
I know of research in the Cambridge/Ipswich area of the UK that's looking into using entanglement in between each pair of optical amplifiers, and using the low-bandwidth entangled channel to regularly exchange encryption keys for a non-entangled optical signal that's sent alongside it. But iirc, that still leaves the issue of having to trust the amplifier nodes.
(Score: 0) by Anonymous Coward on Monday September 02 2019, @02:03PM
uhm ... I wonder if it's possible to get better range with entangled particles than prior? For instance see
https://soylentnews.org/article.pl?sid=19/08/31/0151247 [soylentnews.org]
It seems to claim that entanglement can make radar less noisy. Less noise = further range?
What would be the increase in range though? Fewer amplifier nodes required than prior? More bandwidth with fewer amplifier nodes? Could be useful for something.
(Score: -1, Spam) by Anonymous Coward on Monday September 02 2019, @06:07PM
"Real coders don't need either GUIs or automatic memory management. Delphi is dead" by BarbaraHudson (3785311) July 12, 2019
Delphi/FreePascal != "automatic memmgt", does TRUE 'stand-alone' .exe & MULTIPLATFORM (smartphones/BSD/Linux/Windows/MacOS) GUI + services, tty term etc. & Object Pascal since TIOBE INDEX inception 2001 NEVER OUT of TOP 20 https://www.tiobe.com/tiobe-index/ [tiobe.com]
So - 'Real coder' show work you do registered /.ers like/use (they do mine & I've proof - you don't) https://it.slashdot.org/comments.pl?sid=14501806&cid=59037984 [slashdot.org] https://it.slashdot.org/comments.pl?sid=14501806&cid=59038002 [slashdot.org] https://it.slashdot.org/comments.pl?sid=14501806&cid=59038016 [slashdot.org] https://it.slashdot.org/comments.pl?sid=14501806&cid=59038034 [slashdot.org] https://it.slashdot.org/comments.pl?sid=14501806&cid=59038042 [slashdot.org]
You're all BLOWHARD 'talk' & ERRONEOUS as hell talk too (see above vs. your bs) - barbarahudson's "hotairware"/"notthereware" lol!
(Prove otherwise - I've asked THAT of you many times https://slashdot.org/comments.pl?sid=14448786&cid=58998430 [slashdot.org] & YOU "Run, Forrest: RUN!!!" ya bullshitter weirdo!)
"I am better than you & smarter" by BarbaraHudson September 04, 2017
You don't prove it!
"I should do my part to make the world a safer place" by BarbaraHudson (3785311) July 29, 2019
I do, you don't & registered /.ers use/like my work that does so https://slashdot.org/comments.pl?sid=14382950&cid=58945680 [slashdot.org]
"you're just lazy. Or incompetent. Or both." by BarbaraHudson August 21, 2017
You're BOTH - see next below, lol!
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DUMBASS tried to say THIS stops null-terminated string buffer overflows https://slashdot.org/comments.pl?sid=14350406&cid=58924180 [slashdot.org] lol - WRONG (segmented macro asm code jmp type stuff from 16-bit that hasn't mattered in decades)
BarbaraHudson = WRONG on C vs. Pascal https://slashdot.org/comments.pl?sid=14351188&cid=58921060 [slashdot.org] SPEED & SECURITY (vs. null terminated C string buffer overflows) advantage https://hardware.slashdot.org/comments.pl?sid=14365360&cid=58932312 [slashdot.org] (C++ = same too & w/ STL = safe BUT 5x slower - you CAN'T WIN, loser). IF you use char array pointers OR array positions to do hardcoded pascal strings your C/C++ string lib functions (designed to work w/ dangerous null-terminated strings) will fail too & again you can't win https://slashdot.org/comments.pl?sid=14365286&cid=58932238 [slashdot.org]
MICROSOFT KNOWS Memory bugs in C and C++ code cause security issues so Microsoft is considering alternatives https://www.theregister.co.uk/2019/07/18/microsoft_argues_for_memorysafe_languages_hints_at_move_from_c_to_rust/ [theregister.co.uk] & PASCAL COVERS THIS IN STRINGWORK per the above!
WRONG on Delphi/Linux https://slashdot.org/comments.pl?sid=14357208&cid=58929022 [slashdot.org]
WRONG on String types/size DELPHI has for API etc. https://slashdot.org/comments.pl?sid=14357208&cid=58942910 [slashdot.org]
("3++ STRIKES - 'yer out'")
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"women aren't suited for tech "because estrogen"? by BarbaraHudson (3785311) July 17, 2019
No just you: YOU bear a child from your CORRUPT body MISTER & prove me wrong ON THAT & points in my links above - you can't. Pass a chromosonal test as a REAL female - good luck that!
Slicing off your balls DOESN'T MAKE YOU A REAL WOMAN DELUDED freak - you're a MAN on ESTROGEN CHEMICALLY CASTRATING ITSELF!
(Trying to twist FACT I state on YOU onto REAL women? Not even "nice try")
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"APK, the failed man-child who claims to be self-employed" by BarbaraHudson (3785311) July 18, 2019
I own a business for 12++ yrs. (1994-2007 as a professional programmer-analyst/software-engineer & retired from working for others running a business since late 2007 onward)
YOU FAILED AS A MAN by CHEMICALLY NEUTERING yourself.
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Leftist AntiTRUMP REJECTS = bottom of the barrel:
Arstechnica's Peter Bright child molester ADMITS "he's in a sexual relationship with an 11-year-old" https://www.breitbart.com/tech/2019/06/09/feds-leftist-tech-reporter-peter-bright-arrested-for-soliciting-child-sex-online/ [breitbart.com]
HIS RAP SHEET https://www.docdroid.net/UMNWMSx/bright.pdf#page=4 [docdroid.net] (disgusting) LITTLE BOYS "SUCKING HIS SNAKE" etc. - et al NO BAIL GRANTED (FBI agents/judges felt he's dangerous to kids).
"I'm a leftist" barbarahudson https://slashdot.org/comments.pl?sid=14391394&cid=58948616 [slashdot.org]
YEA: A leftist that "ain't RIGHT" (on TONS of levels).
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"being able to drive you nuts" by BarbaraHudson (3785311) July 26, 2019
YOU CUT OFF YOUR NUTS & CALL ME NUTS?
(LMAO - that's a laugh!)
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* Barb said I started it?:
"You’re the one who started it" by BarbaraHudson (3785311) July 13, 2019
"trolling the hosts file guy in one easy step The next time you see a post by him, just reply anonymously." by tomhudson (43916) March 31, 2011
YOU started up again w/ ME 1st recently IMMEDIATELY on your return to /. https://tech.slashdot.org/comments.pl?sid=14311560&cid=58890562 [slashdot.org]
"You either don't know what you're talking about, or you're intentionally lying" by BarbaraHudson September 03, 2017
No - that's ALL YOU, projecting as usual & you prove it FOR ME: See ALL above.
APK
P.S.=> DISMANTLING a "TraNsTeSticLe": Eat yer words