Exploring qubit-qubit entanglement mediated by one-dimensional plasmonic nanowaveguides
Materials Science
2011-07-06 v2 Quantum Physics
Abstract
We exploit the qubit-qubit coupling induced by plasmon-polariton modes in a one-dimensional nanowaveguide to obtain various two-qubit entanglement situations. Firstly, we observe three phenomena occurring when preparing the initial state of the system and leaving it freely relax: spontaneous formation of entanglement, sudden birth and revival. Then, we show that plugging a laser to each of the qubit, the system arrives to an steady state which, depending on their inter-qubit distance, can also be entangled. For this situation, we also characterize the quantum state of the system showing the entanglement-purity- diagram typical for two-qubit systems.
Cite
@article{arxiv.1107.0584,
title = {Exploring qubit-qubit entanglement mediated by one-dimensional plasmonic nanowaveguides},
author = {A. Gonzalez-Tudela and D. Martin-Cano and E. Moreno and L. Martin-Moreno and F. J. Garcia-Vidal and C. Tejedor},
journal= {arXiv preprint arXiv:1107.0584},
year = {2011}
}
Comments
6 pages. Conference Proceedings PLMCN11