Transmon probe for quantum characteristics of magnons in antiferromagnets

• URL: http://arxiv.org/abs/2302.13167v1
• Date: Sat, 25 Feb 2023 21:26:04 GMT
• Title: Transmon probe for quantum characteristics of magnons in antiferromagnets
• Authors: Vahid Azimi-Mousolou, Anders Bergman, Anna Delin, Olle Eriksson, Manuel Pereiro, Danny Thonig, Erik Sj\"oqvist
• Abstract summary: Magnetic invisible magnon modes, their chiralities and quantum properties can be characterized through the Rabi frequency of the superconducting transmon qubit. We demonstrate how magnetically invisible magnon modes, their chiralities and quantum properties such as nonlocality and two-mode magnon entanglement in bipartite AFMs can be characterized.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The detection of magnons and their quantum properties, especially in antiferromagnetic (AFM) materials, is a substantial step to realize many ambitious advances in the study of nanomagnetism and the development of energy efficient quantum technologies. The recent development of hybrid systems based on superconducting circuits provides the possibility of engineering quantum sensors that exploit different degrees of freedom. Here, we examine the magnon-photon-transmon hybridisation based on bipartite AFM materials, which gives rise to an effective coupling between a transmon qubit and magnons in a bipartite AFM. We demonstrate how magnetically invisible magnon modes, their chiralities and quantum properties such as nonlocality and two-mode magnon entanglement in bipartite AFMs can be characterized through the Rabi frequency of the superconducting transmon qubit.

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