Electron on Solid Neon Qubits

by Prof. Xinhao Li (李新浩) (Westlake University)

Wednesday 26 Nov 2025, 14:00 → 15:00 Asia/Shanghai

Tsung-Dao Lee Institute/N1F-N102 - Smart Classroom (Tsung-Dao Lee Institute)

Host: Prof. Haibiao Zhou 

Venue: TDLI Meeting Room N102

Tencent meeting link:  https://meeting.tencent.com/dm/282FDoSZsv9S

Meeting ID: 726404264, no password 

 

Abstract:

One of the bottlenecks in developing solid-state quantum bit systems is decoherence caused by environmental noise. At cryogenic temperatures, inert element substrates can provide a near-vacuum, low-noise environment for surface electrons, theoretically significantly suppressing decoherence sources. This study explores a novel quantum bit based on single electrons on the surface of solid neon, verifying its potential in long coherence times, high-fidelity control, and scalability. Using a circuit quantum electrodynamics architecture, we achieved addressing of its charge quantum states [1]. By optimizing materials and quantum control, we confirmed the low-noise characteristics of the solid neon surface, achieving a coherence time on the order of 0.1 ms and single-qubit gates with 99.97% fidelity [2,3]. Additionally, we demonstrated a two-qubit gate based on charge-charge interactions [4]. This research lays the foundation for advancing this emerging quantum system, enabling hybrid multi-system integration and the development of related applications.

 

References：

[1] Zhou, X., Koolstra, G., Zhang, X., Yang, G., Han, X., Dizdar, B., ... & Jin, D. (2022). Single electrons on solid neon as a solid-state qubit platform. Nature, 605(7908), 46-50.

[2] Zhou, X., Li, X., Chen, Q., Koolstra, G., Yang, G., Dizdar, B., ... & Jin, D. (2024). Electron charge qubit with 0.1 millisecond coherence time. Nature Physics, 20(1), 116-122.

[3] Li, X., Wang, C. S., Dizdar, B., Huang, Y., Wen, Y., Guo, W., ... & Jin, D. (2025). Noise-resilient solid host for electron qubits above 100 mK. arXiv:2502.01005.

[4] Li, X., Huang, Y., Han, X., Zhou, X., A. Yacoby & Jin, D. (2025). Coherent manipulation of interacting electron qubits on solid neon. arXiv:2503.23738.

 

Biography:

Dr. Xinhao Li obtained his bachelor's degree from Tsinghua University in 2015. He did his PhD in Mechanical Engineering at Massachusetts Institute of Technology and joined Argonne National Laboratory as a postdoc from 2021 to 2024, followed by another brief postdoc period at Harvard University. He joined Westlake University in 2025 as a full-time assistant professor in the Department of Electronic and Information Engineering.