[extropy-chat] time reversed entanglement?

[Damien Broderick]

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.