Probing the Quantum Capacitance of Rydberg Transitions of Surface Electrons on Liquid Helium via Microwave Frequency ModulationRemoveAsher Jennings, Ivan Grytsenko, Yiran Tian, Oleksiy Rybalko, Jun Wang, Itay Josef Barabash, and Erika KawakamiPhys. Rev. Lett. 135, 087001 (2025)
