Entanglement between static and flying qubits in a semiconducting carbon nanotube
Mesoscale and Nanoscale Physics
2007-05-23 v2 Strongly Correlated Electrons
Quantum Physics
Abstract
Entanglement can be generated by two electrons in a spin-zero state on a semiconducting single-walled carbon nanotube. The two electrons, one weakly bound in a shallow well in the conduction band, and the other injected into the conduction band, are coupled by the Coulomb interaction. Both transmission and entanglement are dependent on the well characteristics, which can be controlled by a local gate, and on the kinetic energy of the injected electron. Regimes with different degrees of electron correlation exhibit full or partial entanglement. In the latter case, the maximum entanglement can be estimated as a function of width and separation of a pair of singlet-triplet resonances.
Keywords
Cite
@article{arxiv.cond-mat/0511126,
title = {Entanglement between static and flying qubits in a semiconducting carbon nanotube},
author = {D. Gunlycke and J. H. Jefferson and T. Rejec and A. Ramsak and D. G. Pettifor and G. A. D. Briggs},
journal= {arXiv preprint arXiv:cond-mat/0511126},
year = {2007}
}
Comments
17 pages and 12 figures, accepted to J. Phys. Cond. Mat