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Robust Quantum State Transfer in Random Unpolarized Spin Chains

Authors :
Alex Zhai
Mikhail D. Lukin
Zhe-Xuan Gong
Luming Duan
Liang Jiang
Norman Y. Yao
Alexey V. Gorshkov
Publication Year :
2010
Publisher :
arXiv, 2010.

Abstract

We propose and analyze a new approach for quantum state transfer between remote spin qubits. Specifically, we demonstrate that coherent quantum coupling between remote qubits can be achieved via certain classes of random, unpolarized (infinite temperature) spin chains. Our method is robust to coupling strength disorder and does not require manipulation or control over individual spins. In principle, it can be used to attain perfect state transfer over arbitrarily long range via purely Hamiltonian evolution and may be particularly applicable in a solid-state quantum information processor. As an example, we demonstrate that it can be used to attain strong coherent coupling between Nitrogen-Vacancy centers separated by micrometer distances at room temperature. Realistic imperfections and decoherence effects are analyzed.<br />Comment: 4 pages, 2 figures. V2: Modified discussion of disorder, added references - final version as published in Phys. Rev. Lett

Details

Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....dd10e8b9b1eac4a5717d69954de6a673
Full Text :
https://doi.org/10.48550/arxiv.1011.2762