Coupling of hole double quantum dot in planar germanium to a microwave cavity
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arXiv
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| Autori principali: | , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866916363563433984 |
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| author | 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 |
| author_facet | 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 |
| contents | 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 $g_0/2π$ = 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_08145 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Coupling of hole double quantum dot in planar germanium to a microwave cavity 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 Mesoscale and Nanoscale Physics 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 $g_0/2π$ = 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. |
| title | Coupling of hole double quantum dot in planar germanium to a microwave cavity |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2310.08145 |