Magnons as information carriers in hybrid quantum architectures

ORAL  · Invited

Abstract

In this talk I will explore the possibilities and limitations of using magnons as mediators of quantum information in hybrid quantum systems at the nanoscale. In particular, I will discuss our recent theoretical results on implementing magnon-mediated quantum gates for superconducting qubits [1] and steady-state entanglement of spin qubits by leveraging non-reciprocal and chiral magnons [2]. Complementary, I will show the possibility of engineering quantum states of magnons via their coupling to a superconducting qubit [3,4,5]. Further, I will discuss the prospect of harnessing magnon-phonon coherent interaction for transduction and quantum state transfer [6].

*I acknowledge financial support by the German Federal Ministry of Research, Technology and Space (BMFTR) project QECHQS (Grant No. 16KIS1590K) and by the EU-Project No. HORIZON-EIC-2021-PATHFINDEROPEN-01 PALANTIRI-101046630.

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Publication: [1] Martijn Dols, Sanchar Sharma, Lenos Bechara, Yaroslav M. Blanter, Marios Kounalakis, and Silvia Viola Kusminskiy, Phys. Rev. B 110, 104416 (2024)
[2] Martijn Dols, Mikhail Cherkasskii, Victor Bittencourt, Carlos Gonzalez-Ballestero, Durga Dasari, and Silvia Viola Kusminskiy, arXiv preprint arXiv:2509.13094 (2025)
[3] Marios Kounalakis, Silvia Viola Kusminskiy, and Yaroslav M. Blanter, Phys. Rev. B 108, 224416 (2023)
[4] Sanchar Sharma, Victor Bittencourt, and Silvia Viola Kusminskiy, J. Phys. Mater. 5 034006 (2022)
[5] Sanchar Sharma, Victor Bittencourt, Alexy Karenowska, and Silvia Viola Kusminskiy, Phys. Rev. B 103, L100403 (2021)
[6] Fabian Engelhardt, Victor Bittencourt, Hans Huebl, Olivier Klein, and Silvia Viola Kusminskiy, Phys. Rev. App. 18, 044059 (2022)

Presenters

  • Silvia G Viola Kusminskiy

    • RWTH Aachen University

Authors

  • Silvia G Viola Kusminskiy

    • RWTH Aachen University