SPICE Workshop on Quantum Functionalities of Nanomagnets, June 17th - 19th 2025
Silvia Viola Kusminskiy
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, complementary, the possibility of engineering quantum states of magnons via their coupling, either direct or mediated by a microwave cavity, to a superconducting qubit [2,3,4]. Further, I will discuss the prospect of using Brillouin light scattering for performing quantum tomography of magnons [5].
[1] Martijn Dols, Sanchar Sharma, Lenos Bechara, Yaroslav M. Blanter, Marios Kounalakis, and Silvia Viola Kusminskiy, Phys. Rev. B 110, 104416 (2024)[2] Marios Kounalakis, Silvia Viola Kusminskiy, and Yaroslav M. Blanter, Phys. Rev. B 108, 224416 (2023)
[3] Sanchar Sharma, Victor Bittencourt, and Silvia Viola Kusminskiy, J. Phys. Mater. 5 034006 (2022)
[4] Sanchar Sharma, Victor Bittencourt, Alexy Karenowska, and Silvia Viola Kusminskiy, Phys. Rev. B 103, L100403 (2021)
[5] Sanchar Sharma, Silvia Viola Kusminskiy, and Victor Bittencourt, Physical Review B 110, 014416 (2024)