Coupling of hole double quantum dot in planar germanium to a microwave cavity
| Autor: | Kang, Yuan, Li, Zong-Hu, Kong, Zhen-Zhen, Li, Fang-Ge, Hao, Tian-Yue, Wei, Ze-Cheng, Deng, Song-Yan, Wang, Bao-Chuan, Li, Hai-Ou, Wang, Gui-Lei, Guo, Guang-Can, Cao, Gang, Guo, Guo-Ping |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Phys. Rev. Applied 22, 024054 (2024) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevApplied.22.024054 |
| Popis: | In recent years, notable progress has been made in the study of hole qubits in planar germanium, and circuit quantum electrodynamics (circuit QED) has emerged as a promising approach for achieving long-range coupling and scaling up of qubits. Here, we demonstrate the coupling between holes in a planar germanium double quantum dot (DQD) and photons in a microwave cavity. Specifically, a real-time calibrated virtual gate method is developed to characterize this hybrid system, which in turn allows us to determine the typical parameters sequentially through single-parameter fitting instead of conventional multi-parameter fitting with additional uncertainty, and gives the hole-photon coupling rate of $g_0/2\pi$ = 21.7 MHz. This work is a step toward further research on hole-photon interactions and long-range qubit coupling in planar germanium. The experimental method developed in this work contributes to the more accurate and efficient characterization of hybrid cavity-QED systems. Comment: 11 pages, 4 figures |
| Databáze: | arXiv |
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