A three-dimensional multimode lumped-element resonator for collective spin manipulation and dispersive readout

• URL: http://arxiv.org/abs/2601.05476v1
• Date: Fri, 09 Jan 2026 02:23:19 GMT
• Title: A three-dimensional multimode lumped-element resonator for collective spin manipulation and dispersive readout
• Authors: Zhuo Chen, Wenhua Qin, Hanyu Ren, Ziyi Liu, Kae Nemoto, William John Munro, Yingqiu Mao, Johannes Majer,
• Abstract summary: We report a three-dimensional lumped-element multimode microwave resonator that enables homogeneous collective manipulation and dispersive readout of a macroscopic spin ensemble.<n>The compact design, tunable coupling, and high field homogeneity make this resonator a versatile device for hybrid spin-photon systems and multimode solid-state quantum technologies.
• Score: 9.17706752390019
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We report a three-dimensional lumped-element multimode microwave resonator that enables homogeneous collective manipulation and dispersive readout of a macroscopic spin ensemble. By exploiting geometric symmetry, two antisymmetric modes with strongly suppressed cross-talk are engineered to spatially overlap and couple to the same ensemble at distinct frequencies. Using negatively charged nitrogen-vacancy centers in diamond at 28 mK, we observe collective strong coupling with a coupling strength of 5.0 MHz and demonstrate non-destructive dispersive readout via a detuned mode. The compact design, tunable coupling, and high field homogeneity make this resonator a versatile device for hybrid spin-photon systems and multimode solid-state quantum technologies.

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