From: Patrick Crenshaw (patrick.crenshaw@gmail.com)
Date: Sat Jan 21 2006 - 23:31:21 MST
The key thing to remember here is that when they say "information"
they don't mean something that *we* can use but something that
communicates state information from one *particle* to another. Another
way of saying that is to say that all this backward in time stuff goes
out the window as soon as a measurement is made. One difference
between quantum and classical information is that quantum information
is lost when a measurement is made (and you get classical information)
while classical information is not lost.
On 1/21/06, Damien Broderick <thespike@satx.rr.com> wrote:
>
>
> Quantum Physics, abstract
>
>
>
> Time-reversal formalism applied to maximal bipartite entanglement:
> Theoretical and experimental exploration
>
> http://arxiv.org/abs/quant-ph/0510048
>
> Authors:
> <http://arxiv.org/abs/quant-ph//find/quant-ph/1/au:+Laforest_M/0/1/0/all/0/1>M.
> Laforest,
> <http://arxiv.org/abs/quant-ph//find/quant-ph/1/au:+Laflamme_R/0/1/0/all/0/1>R.
> Laflamme,
> <http://arxiv.org/abs/quant-ph//find/quant-ph/1/au:+Baugh_J/0/1/0/all/0/1>J.
> Baugh
> Comments: 10 pages, 16 figurers, submitted to PRA
> Within the context of quantum teleportation, a proposed intuitive model to
> explain bipartite entanglement describes the scheme as being the same qubit
> of information evolving along and against the flow of time of an external
> observer. We investigate the physicality of such a model by applying the
> time-reversal of the Schrodinger equation in the teleportation context. To
> do so, we first lay down the theory of time-reversal applied to the circuit
> model and then show that the outcome of a teleportation-like circuit is
> consistent with the usual tensor product treatment, thus independent of the
> physical quantum system used to encode the information. Finally, we
> demonstrate a proof of principle experiment on a liquid state NMR quantum
> information processor. The experimental results are consistent with the
> interpretation that information can be seen as flowing backward in time
> through entanglement.
>
>
>
This archive was generated by hypermail 2.1.5 : Wed Jul 17 2013 - 04:00:55 MDT