Characterization and Control of Quantum Spin Chains and Rings
Quantum Physics
2019-10-15 v1
Abstract
Information flow in quantum spin networks is considered. Two types of control -- temporal bang-bang switching control and control by varying spatial degrees of freedom -- are explored and shown to be effective in speeding up information transfer and increasing transfer fidelities. The control is model-based and therefore relies on accurate knowledge of the system parameters. An efficient protocol for simultaneous identification of the coupling strength and the exact number of spins in a chain is presented.
Cite
@article{arxiv.1403.0226,
title = {Characterization and Control of Quantum Spin Chains and Rings},
author = {Sophie Schirmer and Frank Langbein},
journal= {arXiv preprint arXiv:1403.0226},
year = {2019}
}
Comments
to appear in ISCCSP 2014