At 03:37 PM 4/12/04 -0400, Perry E. Metzger wrote: > >QC can only run over a dedicated fiber over a short run, where more >normal mechanisms can work fine over any sort of medium -- copper, the >PSTN, the internet, etc, and can operate without distance limitation.
Nice essay. I especially liked the discussion of authentication. Its also the case AFAIK that the quantum-carrying fiber can only carry one photon at a time. (Perhaps you can multiplex different frequencies, if your demultiplexor doesn't change the quantum properties). Now while there *is* a lot of dark fiber, sending one photon at a time is a pretty good way to keep the construction crews digging up roads :-) Similar quantum-hype is sometimes argued in RNG discussions by those with very narrow views of what an RNG needs and consists of. --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]