$1.5 billion: The cost of cutting London-Tokyo latency by 60ms

George Herbert george.herbert at gmail.com
Fri Mar 23 17:34:42 CDT 2012


>From the abstract:  "The link achieved a decoded data rate of 0.1
bits/sec with a bit error rate of 1% over a distance of 1.035 km,
including 240 m of earth."

http://arxiv.org/pdf/1203.2847v1.pdf

For practical communications, at longer distances, you probably lose
beam intensity as a 1/R^2 function (the neutrino beam isn't precisely
collimated), so 1,000 km away it will be 1 millionth as strong, or
0.0000001 baud, 1 bit per 115.74 days.  At 2,000 km it would be less
than 1 bit per year.

Sure you want to do this? 8-)


On Fri, Mar 23, 2012 at 2:44 PM, Simon Lyall <simon at darkmere.gen.nz> wrote:
>
> You guys joke but here is n little article from last week on the current
> state of Neutrino communications:
>
> http://www.economist.com/node/21550242
>
> "The neutrinos themselves are created by smashing bunches of protons into a
> target made of graphite. They are detected roughly 1km away by researchers
> [..] . By modulating the pulses of protons the group was able to send a
> message in binary that, when translated, read “neutrino”.   "
>
>
> --
> Simon Lyall  |  Very Busy  |  Web: http://www.darkmere.gen.nz/
> "To stay awake all night adds a day to your life" - Stilgar | eMT.



-- 
-george william herbert
george.herbert at gmail.com



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