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arXiv · 1902.05704

Long-distance entangling gates between quantum dot spins mediated by a superconducting resonator

Ada Warren·Edwin Barnes·Sophia E. Economou
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Abstract

Recent experiments with silicon qubits demonstrated strong coupling of a microwave resonator to the spin of a single electron in a double quantum dot, opening up the possibility of long-range spin-spin interactions. We present our theoretical calculation of effective interactions between distant quantum dot spins coupled by a resonator, and propose a protocol for fast, high-fidelity two-qubit gates consistent with experimentally demonstrated capabilities. Our simulations show that, in the presence of noise, spin-spin entangling gates significantly outperform cavity-mediated gates on charge qubits.

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Ada Warren, Edwin Barnes, Sophia E. Economou. 2019-02-15. Long-distance entangling gates between quantum dot spins mediated by a superconducting resonator. https://doi.org/10.1103/physrevb.100.161303

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