Tripartite hybrid quantum systems: Skyrmion-mediated quantum interactions between single NV centers and superconducting qubits

• URL: http://arxiv.org/abs/2505.00266v1
• Date: Thu, 01 May 2025 03:24:42 GMT
• Title: Tripartite hybrid quantum systems: Skyrmion-mediated quantum interactions between single NV centers and superconducting qubits
• Authors: Xue-Feng Pan, Peng-Bo Li,
• Abstract summary: Nitrogen-vacancy (NV) centers in diamond and superconducting qubits are two promising solid-state quantum systems for quantum science and technology.<n>We propose and analyze a hybrid quantum system consisting of a magnetic skyrmion, an NV center, and a superconducting qubit.
• Score: 0.32885740436059047
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Nitrogen-vacancy (NV) centers in diamond and superconducting qubits are two promising solid-state quantum systems for quantum science and technology, but the realization of controlled interfaces between individual solid-state spins and superconducting qubits remains fundamentally challenging. Here, we propose and analyze a hybrid quantum system consisting of a magnetic skyrmion, an NV center, and a superconducting qubit, where the solid-state qubits are both positioned in proximity to the skyrmion structure in a thin magnetic disk. We show that it is experimentally feasible to achieve strong magnetic (coherent or dissipative) coupling between the NV center and the superconducting qubit by using the \textit{quantized gyration mode of the skyrmion} as an intermediary. This allows coherent information transfer and nonreciprocal responses between the NV center and the superconducting qubit at the single quantum level with high controllability. The proposed platform provides a scalable pathway for implementing quantum protocols that synergistically exploit the complementary advantages of spin-based quantum memories, microwave-frequency superconducting circuits, and topologically protected magnetic excitations.

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