Gorde:
| Egile Nagusiak: | , , , , , |
|---|---|
| Formatua: | Preprint |
| Argitaratua: |
2024
|
| Gaiak: | |
| Sarrera elektronikoa: | https://arxiv.org/abs/2410.13721 |
| Etiketak: |
Etiketa erantsi
Etiketarik gabe, Izan zaitez lehena erregistro honi etiketa jartzen!
|
| _version_ | 1866909353545564160 |
|---|---|
| author | Wolfe, M. A. McJunkin, Thomas Ward, Daniel R. Campbell, DeAnna Friesen, Mark Eriksson, M. A. |
| author_facet | Wolfe, M. A. McJunkin, Thomas Ward, Daniel R. Campbell, DeAnna Friesen, Mark Eriksson, M. A. |
| contents | The challenges of operating qubits in a cryogenic environment point to a looming bottleneck for large-scale quantum processors, limited by the number of input-output connections. Classical processors solve this problem via multiplexing; however, on-chip multiplexing circuits have not been shown to have similar benefits for cryogenic quantum devices. In this work we integrate classical circuitry and Si/SiGe quantum devices on the same chip, providing a test bed for qubit scale-up. Our method uses on-chip field-effect transistors (FETs) to multiplex a grid of work zones, achieving a nearly tenfold reduction in control wiring. We leverage this set-up to probe device properties across a 6x6mm$^2$ array of 16 Hall bars. We successfully operate the array at cryogenic temperatures and high magnetic fields where the quantum Hall effect is observed. Building upon these results, we propose a vision for readout in a large-scale silicon quantum processor with a limited number of control connections. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_13721 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | On-chip cryogenic multiplexing of Si/SiGe quantum devices Wolfe, M. A. McJunkin, Thomas Ward, Daniel R. Campbell, DeAnna Friesen, Mark Eriksson, M. A. Mesoscale and Nanoscale Physics Quantum Physics The challenges of operating qubits in a cryogenic environment point to a looming bottleneck for large-scale quantum processors, limited by the number of input-output connections. Classical processors solve this problem via multiplexing; however, on-chip multiplexing circuits have not been shown to have similar benefits for cryogenic quantum devices. In this work we integrate classical circuitry and Si/SiGe quantum devices on the same chip, providing a test bed for qubit scale-up. Our method uses on-chip field-effect transistors (FETs) to multiplex a grid of work zones, achieving a nearly tenfold reduction in control wiring. We leverage this set-up to probe device properties across a 6x6mm$^2$ array of 16 Hall bars. We successfully operate the array at cryogenic temperatures and high magnetic fields where the quantum Hall effect is observed. Building upon these results, we propose a vision for readout in a large-scale silicon quantum processor with a limited number of control connections. |
| title | On-chip cryogenic multiplexing of Si/SiGe quantum devices |
| topic | Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2410.13721 |