Robust entanglement
Quantum Physics
2009-11-11 v1
Abstract
It is common belief among physicists that entangled states of quantum systems loose their coherence rather quickly. The reason is that any interaction with the environment which distinguishes between the entangled sub-systems collapses the quantum state. Here we investigate entangled states of two trapped Ca ions and observe robust entanglement lasting for more than 20 seconds.
Cite
@article{arxiv.quant-ph/0508021,
title = {Robust entanglement},
author = {H. Haeffner and F. Schmidt-Kaler and W. Haensel and C. F. Roos and T. Koerber and M. Chwalla and M. Riebe and J. Benhelm and U. D. Rapol and C. Becher and R. Blatt},
journal= {arXiv preprint arXiv:quant-ph/0508021},
year = {2009}
}