3 ms·
If the current number of photons per bit is 1500 and the effective limit at 8.3GHz is 25, that is a factor of 60. With each doubling of distance the number dec
by 7373737373 2y ago
If the current number of photons per bit is 1500 and the effective limit at 8.3GHz is 25, that is a factor of 60.
With each doubling of distance the number decreases by the inverse square law, so with the current setup we'd have a maximum distance of log2(60) = 5.9 times the current distance (about 163 astronomical units (AU)) which is 961 AU.
In comparison, the closest star to our sun, Proxima Centauri, is 268774 AU away!
Which means we would need something 268774/961 ~= 280 times SQUARED = 78222 times more sensitive than the current setup at the Shannon limit to communicate with it if it managed to get that far.