High dynamic-range quantum sensing of magnons and their dynamics using a superconducting qubit

• URL: http://arxiv.org/abs/2412.11859v1
• Date: Mon, 16 Dec 2024 15:18:26 GMT
• Title: High dynamic-range quantum sensing of magnons and their dynamics using a superconducting qubit
• Authors: Sonia Rani, Xi Cao, Alejandro E. Baptista, Axel Hoffmann, Wolfgang Pfaff,
• Abstract summary: We use a superconducting qubit to probe magnons in a ferrimagnet over a range of about 2000 excitations. Using qubit control and parametrically induced qubit-magnon interactions we demonstrate few-excitation sensitive detection of magnons.
• Score: 39.58317527488534
• License:
• Abstract: Magnons can endow quantum devices with new functionalities. Assessing their potential requires precise characterization of magnon properties. Here, we use a superconducting qubit to probe magnons in a ferrimagnet over a range of about 2000 excitations. Using qubit control and parametrically induced qubit-magnon interactions we demonstrate few-excitation sensitive detection of magnons and are able to accurately resolve their decay. These results introduce quantum circuits as high-dynamic range probes for magnons and provide an avenue toward sensitive detection of nontrivial magnon dynamics.

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