Complementarity and Information in "Delayed-choice for entanglement swapping"
Quantum Physics
2009-11-10 v1
Abstract
Building on Peres's idea of "Delayed-choice for extanglement swapping" we show that even the degree to which quantum systems were entangled can be defined after they have been registered and may even not exist any more. This does not arise as a paradox if the quantum state is viewed as just a representative of information. Moreover such a view gives a natural quantification of the complementarity between the measure of information about the input state for teleportation and the amount of entanglement of the resulting swapped entangled state.
Cite
@article{arxiv.quant-ph/0405036,
title = {Complementarity and Information in "Delayed-choice for entanglement swapping"},
author = {Caslav Brukner and Markus Aspelmeyer and Anton Zeilinger},
journal= {arXiv preprint arXiv:quant-ph/0405036},
year = {2009}
}
Comments
5 pages, 2 figures, submitted to the special issue of Foundation of Physics in honor of Asher Peres' 70th birthday