Long-lived spin entanglement induced by a spatially correlated thermal bath
Quantum Physics
2013-05-29 v2 Other Condensed Matter
Abstract
We investigate how two spatially separated qubits coupled to a common heat bath can be entangled by purely dissipative dynamics. We identify a dynamical time scale associated with the lifetime of the dissipatively generated entanglement and show that it can be much longer than either the typical single-qubit decoherence time or the time scale on which a direct exchange interaction can entangle the qubits. We give an approximate analytical expression for the long-time evolution of the qubit concurrence and propose an ion trap scheme in which such dynamics should be observable.
Cite
@article{arxiv.0807.2202,
title = {Long-lived spin entanglement induced by a spatially correlated thermal bath},
author = {Dara P. S. McCutcheon and Ahsan Nazir and Sougato Bose and Andrew J. Fisher},
journal= {arXiv preprint arXiv:0807.2202},
year = {2013}
}
Comments
5 pages, 2 figures