A foundry-fabricated spin qubit unit cell with in-situ dispersive readout
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arXiv
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| Autori principali: | , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909596843507712 |
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| author | Hamonic, Pierre Toubeix, Mathieu Haas, Guillermo Nath, Jayshankar Dartiailh, Matthieu C. Martinez, Biel Bertrand, Benoit Niebojewski, Heimanu Vinet, Maud Bäuerle, Christopher Balestro, Franck Meunier, Tristan Urdampilleta, Matias |
| author_facet | Hamonic, Pierre Toubeix, Mathieu Haas, Guillermo Nath, Jayshankar Dartiailh, Matthieu C. Martinez, Biel Bertrand, Benoit Niebojewski, Heimanu Vinet, Maud Bäuerle, Christopher Balestro, Franck Meunier, Tristan Urdampilleta, Matias |
| contents | Spin qubits based on semiconductor quantum dots are a promising prospect for quantum computation because of their high coherence times and gate fidelities. However, scaling up those structures to the numbers required by fault-tolerant quantum computing is currently hampered by a number of issues. One of the main issues is the need for single-shot low-footprint qubit readout. Here, we demonstrate the single-shot in situ measurement of a compact qubit unit-cell. The unit cell is composed of two electron spins with a controllable exchange interaction. We report initialization, single-shot readout and two-electron entangling gate. The unit cell was successfully operated at up to 1 K, with state-of-the-art charge noise levels extracted using free induction decay. With its integrated readout and high stability, this foundry fabricated qubit unit cell demonstrates strong potential for scalable quantum computing architectures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_20572 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A foundry-fabricated spin qubit unit cell with in-situ dispersive readout Hamonic, Pierre Toubeix, Mathieu Haas, Guillermo Nath, Jayshankar Dartiailh, Matthieu C. Martinez, Biel Bertrand, Benoit Niebojewski, Heimanu Vinet, Maud Bäuerle, Christopher Balestro, Franck Meunier, Tristan Urdampilleta, Matias Mesoscale and Nanoscale Physics Spin qubits based on semiconductor quantum dots are a promising prospect for quantum computation because of their high coherence times and gate fidelities. However, scaling up those structures to the numbers required by fault-tolerant quantum computing is currently hampered by a number of issues. One of the main issues is the need for single-shot low-footprint qubit readout. Here, we demonstrate the single-shot in situ measurement of a compact qubit unit-cell. The unit cell is composed of two electron spins with a controllable exchange interaction. We report initialization, single-shot readout and two-electron entangling gate. The unit cell was successfully operated at up to 1 K, with state-of-the-art charge noise levels extracted using free induction decay. With its integrated readout and high stability, this foundry fabricated qubit unit cell demonstrates strong potential for scalable quantum computing architectures. |
| title | A foundry-fabricated spin qubit unit cell with in-situ dispersive readout |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2504.20572 |