Blueprint for all-to-all connected superconducting spin qubits

• URL: http://arxiv.org/abs/2405.09988v1
• Date: Thu, 16 May 2024 11:13:26 GMT
• Title: Blueprint for all-to-all connected superconducting spin qubits
• Authors: Marta Pita-Vidal, Jaap J. Wesdorp, Christian Kraglund Andersen,
• Abstract summary: Andreev spin qubits (ASQs) have emerged as a promising qubit platform that combines superconducting circuits with semiconductor spin degrees of freedom. We introduce an architecture that achieves all-to-all connectivity between multiple remote ASQs. Our architecture shows promise both for gate-based quantum computing and for analog quantum simulation applications.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Andreev (or superconducting) spin qubits (ASQs) have recently emerged as a promising qubit platform that combines superconducting circuits with semiconductor spin degrees of freedom. While recent experiments have successfully coupled two ASQs, how to realize a scalable architecture for extending this coupling to multiple distant qubits remains an open question. In this work, we resolve this challenge by introducing an architecture that achieves all-to-all connectivity between multiple remote ASQs. Our approach enables selective connectivity between any qubit pair while maintaining all other qubit pairs uncoupled. Furthermore, we demonstrate the feasibility of efficient readout using circuit quantum electrodynamics techniques and compare different readout configurations. Our architecture shows promise both for gate-based quantum computing and for analog quantum simulation applications by offering higher qubit connectivity than alternative solid-state platforms.

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