Perfect transfer of many-particle quantum state via high-dimensional systems with spectrum-matched symmetry
Abstract
The quantum state transmission (QST) through the medium of high-dimensional many-particle system is studied with a symmetry analysis. We discover that, if the spectrum matches the symmetry of a fermion or boson system in a certain fashion, a perfect quantum state transfer can be implemented without any operation on the medium. Based on this observation the well-established results for the QST via quantum spin chains can be generalized to the high-dimensional many-particle systems with pre-engineered nearest neighbor (NN) hopping constants. By investigating a simple but realistic near half-filled tight-binding fermion system with uniform NN hopping integral, we show that an arbitrary many-particle state near the fermi surface can be perfectly transferred to its translational counterpart.
Keywords
Cite
@article{arxiv.quant-ph/0504175,
title = {Perfect transfer of many-particle quantum state via high-dimensional systems with spectrum-matched symmetry},
author = {Ying Li and Z. Song and C. P. Sun},
journal= {arXiv preprint arXiv:quant-ph/0504175},
year = {2007}
}
Comments
4 pages, 5 figures