Long-range magnetic dipole-dipole interaction mediated by a superconductor

Yoav Romach, Tal Wasserman, Shai Tishby, Nir Bar-Gill

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Quantum computations and simulations require strong coherent coupling between qubits, which may be spatially separated. Achieving this coupling for solid-state-based spin qubits is a long-standing challenge. Here we theoretically investigate a method for achieving such a coupling, based on superconducting nanostructures designed to channel the magnetic flux created by the qubits. We detail semiclassical analytical calculations and simulations of the magnetic field created by a magnetic dipole, depicting the spin qubit, positioned directly below nanofabricated apertures in a superconducting layer. We show that such structures could channel the magnetic flux, enhancing the dipole-dipole interaction between spin qubits and changing its scaling with distance, thus potentially paving the way for controllably engineering an interacting spin system.

Original languageAmerican English
Article number033280
JournalPhysical Review Research
Volume3
Issue number3
DOIs
StatePublished - Sep 2021

Bibliographical note

Publisher Copyright:
© 2021 Published by the American Physical Society

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