John Clark wrote:
> Adrian Tymes <wingcat@pacbell.net> Wrote:
> > *But*, if you *alter* the shared property, then the alteration also
> > happens immediately...or so I've been told. Measuring that property
> > from moment to moment to see if it changed would be the communication
> > channel in that case.
>
> No, changing a property of a receiver by a transmitter is only half
> of what is needed for communication, as I pointed out in my other
> post you also need a standard to measure the receiver's change against.
> You need to know not only the state your receiver is in now but what state
> it would be in if the transmitter had done nothing, without that there can
> be no message. Quantum mechanics can cause the change but can't
> provide the standard, so there is no communication, just noise.
Like I said, moment to moment. If change from last moment, then bit
sent. If no such change, then no bit sent. (Perhaps this wouldn't
be 100% if spins can change on their own, but with enough particles
that all change at once if a bit is sent, couldn't random flips get
reduced to, say, 1% or less errors?)
This archive was generated by hypermail 2b30 : Sat May 11 2002 - 17:44:13 MDT