Superadiabatic quantum state transfer in spin chains
Mesoscale and Nanoscale Physics
2017-05-12 v3 Quantum Physics
Abstract
In this letter we propose a superadiabatic protocol where quantum state transfer can be achieved with arbitrarily high accuracy and minimal control across long spin chains with an odd number of spins. The quantum state transfer protocol only requires the control of the couplings between the qubits on the edge and the spin chain. We predict fidelities above 0.99 for an evolution of nanoseconds using typical spin exchange coupling values of {\mu}eV. Furthermore, by building a superadiabatic formalism on top of this protocol, we propose a effective superadiabatic protocol that retains the minimal control over the spin chain and improves the fidelity by up to 20%.
Cite
@article{arxiv.1604.04885,
title = {Superadiabatic quantum state transfer in spin chains},
author = {Ricardo Agundez and Charles D. Hill and Lloyd C. L. Hollenberg and Sven Rogge and Miriam Blaauboer},
journal= {arXiv preprint arXiv:1604.04885},
year = {2017}
}
Comments
Final accepted version