Si/SiGe QuBus for single electron information-processing devices with memory and micron-scale connectivity function
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arXiv
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| Autores principales: | , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2023
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| _version_ | 1866909135872720896 |
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| author | Xue, Ran Beer, Max Seidler, Inga Humpohl, Simon Tu, Jhih-Sian Trellenkamp, Stefan Struck, Tom Bluhm, Hendrik Schreiber, Lars R. |
| author_facet | Xue, Ran Beer, Max Seidler, Inga Humpohl, Simon Tu, Jhih-Sian Trellenkamp, Stefan Struck, Tom Bluhm, Hendrik Schreiber, Lars R. |
| contents | The connectivity within single carrier information-processing devices requires transport and storage of single charge quanta. Our all-electrical Si/SiGe shuttle device, called quantum bus (QuBus), spans a length of 10 $\mathrmμ$m and is operated by only six simply-tunable voltage pulses. It operates in conveyor-mode, i.e. the electron is adiabatically transported while confined to a moving QD. We introduce a characterization method, called shuttle-tomography, to benchmark the potential imperfections and local shuttle-fidelity of the QuBus. The fidelity of the single-electron shuttle across the full device and back (a total distance of 19 $\mathrmμ$m) is $(99.7 \pm 0.3)\,\%$. Using the QuBus, we position and detect up to 34 electrons and initialize a register of 34 quantum dots with arbitrarily chosen patterns of zero and single-electrons. The simple operation signals, compatibility with industry fabrication and low spin-environment-interaction in $^{28}$Si/SiGe, promises spin-conserving transport of spin qubits for quantum connectivity in quantum computing architectures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_16375 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Si/SiGe QuBus for single electron information-processing devices with memory and micron-scale connectivity function Xue, Ran Beer, Max Seidler, Inga Humpohl, Simon Tu, Jhih-Sian Trellenkamp, Stefan Struck, Tom Bluhm, Hendrik Schreiber, Lars R. Mesoscale and Nanoscale Physics Quantum Physics The connectivity within single carrier information-processing devices requires transport and storage of single charge quanta. Our all-electrical Si/SiGe shuttle device, called quantum bus (QuBus), spans a length of 10 $\mathrmμ$m and is operated by only six simply-tunable voltage pulses. It operates in conveyor-mode, i.e. the electron is adiabatically transported while confined to a moving QD. We introduce a characterization method, called shuttle-tomography, to benchmark the potential imperfections and local shuttle-fidelity of the QuBus. The fidelity of the single-electron shuttle across the full device and back (a total distance of 19 $\mathrmμ$m) is $(99.7 \pm 0.3)\,\%$. Using the QuBus, we position and detect up to 34 electrons and initialize a register of 34 quantum dots with arbitrarily chosen patterns of zero and single-electrons. The simple operation signals, compatibility with industry fabrication and low spin-environment-interaction in $^{28}$Si/SiGe, promises spin-conserving transport of spin qubits for quantum connectivity in quantum computing architectures. |
| title | Si/SiGe QuBus for single electron information-processing devices with memory and micron-scale connectivity function |
| topic | Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2306.16375 |