Optical repeaters

[E. ALLEN SMITH]

From:	IN%"thad at hammerhead.com" 20-FEB-1996 09:52:39.27

>But, and this is the interesting part; you cannot use this feature to tap
>the line.  Measuring either one of these photons would disturb the other,
>destroying the state that it has.

	I believe that all of this comes down to what and when is the
"waveform collapse" - what and when is observation. If any interaction with
something else counts as observation, then it won't work. This problem is
where one gets into the many worlds hypothesis et al.
	-Allen