26th Australian Institute of Physics Congress and the Australian and New Zealand Conference on Optics and Photonics

Single Electrons on Solid Neon: Toward Charge-Qubit Realization

Not scheduled

20m

Belinda Hutchinson Building (The University of Sydney )

Poster AIP | Quantum Science and Technology (QST)

Description

Electrons floating in vacuum provide a clean platform for quantum information processing due to their isolation from material defects. Electrons on solid neon have emerged as a promising qubit platform, with previous studies reporting long coherent time and high single-qubit gate fidelity [1]. Here, as a step toward the realization of a charge qubit, we couple electrons trapped on solid neon to a superconducting NbTiN microwave resonator. We observe vacuum Rabi splitting with a coupling strength of (g/2π = 0.25) MHz, demonstrating the coupling between the electron motional state and the resonator. Notably, electron–resonator coupling features remained stable for over one month, indicating long-lived trapping and excellent charge stability. Furthermore, gate-dependent changes in the resonator response provide evidence consistent with electron localization near the intended trapping position.

References
[1] X. Zhou, et al., Nat. Phys. 20, 116 (2024).