TY - JOUR
T1 - Long-range magnetic dipole-dipole interaction mediated by a superconductor
AU - Romach, Yoav
AU - Wasserman, Tal
AU - Tishby, Shai
AU - Bar-Gill, Nir
N1 - Publisher Copyright:
© 2021 Published by the American Physical Society
PY - 2021/9
Y1 - 2021/9
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85116314609&partnerID=8YFLogxK
U2 - 10.1103/PhysRevResearch.3.033280
DO - 10.1103/PhysRevResearch.3.033280
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AN - SCOPUS:85116314609
SN - 2643-1564
VL - 3
JO - Physical Review Research
JF - Physical Review Research
IS - 3
M1 - 033280
ER -