Quantum state transfer in spin chains via shortcuts to adiabaticity
Quantum Physics
2018-02-14 v1
Abstract
Based on shortcuts to adiabaticity and quantum Zeno dynamics, we present a protocol to implement quantum state transfer (QST) in a quantum spin-1/2 chain. In the protocol, the complex Hamiltonian of an -site system is simplified, and a simple effective Hamiltonian is present. It is shown that only the control of the coupling strengths between the boundary spins and the bulk spins are required for QST. Numerical simulations demonstrate that the protocol possesses high efficiency and is robust against the decay and the fluctuations of the control fields. The protocol might provide an alternative choice for transferring quantum states via spin chain systems.
Cite
@article{arxiv.1801.03330,
title = {Quantum state transfer in spin chains via shortcuts to adiabaticity},
author = {Bi-Hua Huang and Yi-Hao Kang and Ye-Hong Chen and Zhi-Cheng Shi and Jie Song and Yan Xia},
journal= {arXiv preprint arXiv:1801.03330},
year = {2018}
}
Comments
9 pages, 6 figures, has been accepted by Phys. Rev. A