quantum physics uncertainty time travel

[grladams at teleport.com]

I am enjoying the mathematics side reading-- today a mathematician was in
the library, and he seemed to get happy when I mentioned Goettingen, smile
broadened, kinda thing.

I don't know who the author is of this website, just did a random google
search with subject kw's.

"One would think that the photon must do one thing or the other, but
quantum mechanics tells us that it can do both."

and

Superposition of Time Evolutions of Quantum System and a Quantum Time
Translation Machine
Y. Aharonov, J. Anandan, S. Popescu, and L. Vaidman (AAPV)
http://www.npl.washington.edu/av/altvw45.html

It goes on to say:

We could place a system in the AAVP machine, run it, and with some
probability remove a system that has experienced a large positive time
displacement. This could speed up the decay of a long-lived radioactive
source from many years to a few seconds, suggesting a radical new way of
dealing with radioactive waste. A barrel of wine or scotch might also be
"aged" to increase its value and quality.


If we could select for zero time displacement, this would in effect produce
a "stasis field" of the kind Larry Niven has used in his fiction. We could
freeze the internal system with no time change for the period it was
isolated, while time in the external world moved forward at the usual rate.

But perhaps the most interesting use of the AAVP machine would be to
produce negative time displacements. It is not difficult to advance the
time evolution of a system it we are patient. We have only to wait while it
evolves or ages. But reversing its time evolution is not within our
capabilities. The second law of thermodynamics, the inexorable increase in
the entropy of a system with time, prevents such reversals. Yet the AAVP
machine appears to offer the possibility of doing just that. A system,
placed in an AAVP machine selected 


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