Simulated Charge Stability in a MOSFET Linear Quantum Dot Array
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866911783024852992 |
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| author | Merino, Zach D. Khromets, Bohdan Baugh, Jonathan |
| author_facet | Merino, Zach D. Khromets, Bohdan Baugh, Jonathan |
| contents | In this study, we address challenges in designing quantum information processors based on electron spin qubits in electrostatically-defined quantum dots (QDs). Numerical calculations of charge stability diagrams are presented for a realistic double QD device geometry. These methods generaize to linear QD arrays, and are based on determining the effective parameters of a Hubbard model Hamiltonian that is then diagonalized to find the many-electron ground state energy. These calculations enable the identification of gate voltage ranges that maintain desired charge states during qubit manipulation, and also account for electrical cross-talk between QDs. As a result, the methods presented here promise to be a valuable tool for developing scalable spin qubit quantum processors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_15499 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Simulated Charge Stability in a MOSFET Linear Quantum Dot Array Merino, Zach D. Khromets, Bohdan Baugh, Jonathan Mesoscale and Nanoscale Physics In this study, we address challenges in designing quantum information processors based on electron spin qubits in electrostatically-defined quantum dots (QDs). Numerical calculations of charge stability diagrams are presented for a realistic double QD device geometry. These methods generaize to linear QD arrays, and are based on determining the effective parameters of a Hubbard model Hamiltonian that is then diagonalized to find the many-electron ground state energy. These calculations enable the identification of gate voltage ranges that maintain desired charge states during qubit manipulation, and also account for electrical cross-talk between QDs. As a result, the methods presented here promise to be a valuable tool for developing scalable spin qubit quantum processors. |
| title | Simulated Charge Stability in a MOSFET Linear Quantum Dot Array |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2402.15499 |