Re: Quantum entanglement and information transfer

From: Tom Trotter (tom129_at_juno.com)
Date: 07/16/04 

Date: 16 Jul 2004 09:19:45 -0400

ps@ws5.com (Paul Stewart Snyder) wrote in message news:<d16eb5af.0407141925.2054c9a0@posting.google.com>...

[... snip]

> We have A instantaneously changing state when
> B does, no matter what the distance, and presumably
> even if no measurement can be made. I see
> shadows of the Copenhagen Interpretation, if we
> moved toward a many worlds model would the idea
> of instantaneous change be more likely to
> have a physical reality?

[ ... snip]

The idea of instantaneous (simultaneous) change
*does* have a physical reality (without MWI),
doesn't it?

Consider two photons emitted from
the same atom and correlated in polarization.
If you learn the polarization of one of the
photons, then you instantly know the polarization
of the other.

Consider a wheel with two marks on opposite
sides of it. As the wheel revolves, the
opposing marks simultaneously change position.

Consider two colliding objects whose momenta
are known prior to their collision. In a
sufficiently closed/isolated setting, subsequently
learning the momentum of one of the objects
will allow you to deduce the momentum of the
other.

The entities in the above examples have certain
relationships to each other that allow their
behavior to be correlated in some encompassing
observational context. These correlations
require no communication between the correlated
entities.

Or, am I missing your point?