Single observable concurrence measurement without simultaneous copies
Quantum Physics
2009-11-13 v1
Abstract
We present a protocol that allows us to obtain the concurrence of any two qubit pure state by performing a minimal and optimal tomography of one of the subsystems through measuring a single observable of an ancillary four dimensional qudit. An implementation for a system of trapped ions is also proposed, which can be achieved with present day experimental techniques.
Cite
@article{arxiv.quant-ph/0611015,
title = {Single observable concurrence measurement without simultaneous copies},
author = {A. Salles and F. de Melo and J. C. Retamal and R. L. de Matos Filho and N. Zagury},
journal= {arXiv preprint arXiv:quant-ph/0611015},
year = {2009}
}
Comments
4 pages, 1 figure