We show theoretically that a network of superconducting loops and magnetic particles can be used to implement magnonic crystals with tunable magnonic band structures. In our approach, the loops mediate interactions between the particles and allow magnetic excitations to tunnel over long distances. As a result, different arrangements of loops and particles allow one to engineer the band structure for the magnonic excitations. Furthermore, we show how magnons in such crystals can serve as a quantum bus for long-distance magnetic coupling of spin qubits. The qubits are coupled to the magnets in the network by their local magnetic-dipole interaction and provide an integrated way to measure the state of the magnonic quantum network.
@article{arxiv.1809.04901,
title = {Hybrid Architecture for Engineering Magnonic Quantum Networks},
author = {C. C. Rusconi and M. J. A. Schuetz and J. Gieseler and M. D. Lukin and O. Romero-Isart},
journal= {arXiv preprint arXiv:1809.04901},
year = {2019}
}
Comments
Manuscript: 4 pages, 3 figures. Supplemental Material: 9 pages, 4 figures. V2: Published version in PRA: 14 pages + 8 figures. Substantial rearrangement of the content of the previous version