A 300 mm foundry silicon spin qubit unit cell exceeding 99% fidelity in all operations
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866912665378488320 |
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| author | Steinacker, Paul Stuyck, Nard Dumoulin Lim, Wee Han Tanttu, Tuomo Feng, MengKe Nickl, Andreas Serrano, Santiago Candido, Marco Cifuentes, Jesus D. Hudson, Fay E. Chan, Kok Wai Kubicek, Stefan Jussot, Julien Canvel, Yann Beyne, Sofie Shimura, Yosuke Loo, Roger Godfrin, Clement Raes, Bart Baudot, Sylvain Wan, Danny Laucht, Arne Yang, Chih Hwan Saraiva, Andre Escott, Christopher C. De Greve, Kristiaan Dzurak, Andrew S. |
| author_facet | Steinacker, Paul Stuyck, Nard Dumoulin Lim, Wee Han Tanttu, Tuomo Feng, MengKe Nickl, Andreas Serrano, Santiago Candido, Marco Cifuentes, Jesus D. Hudson, Fay E. Chan, Kok Wai Kubicek, Stefan Jussot, Julien Canvel, Yann Beyne, Sofie Shimura, Yosuke Loo, Roger Godfrin, Clement Raes, Bart Baudot, Sylvain Wan, Danny Laucht, Arne Yang, Chih Hwan Saraiva, Andre Escott, Christopher C. De Greve, Kristiaan Dzurak, Andrew S. |
| contents | Fabrication of quantum processors in advanced 300 mm wafer-scale complementary metal-oxide-semiconductor (CMOS) foundries provides a unique scaling pathway towards commercially viable quantum computing with potentially millions of qubits on a single chip. Here, we show precise qubit operation of a silicon two-qubit device made in a 300 mm semiconductor processing line. The key metrics including single- and two-qubit control fidelities exceed 99% and state preparation and measurement fidelity exceeds 99.9%, as evidenced by gate set tomography (GST). We report coherence and lifetimes up to $T_\mathrm{2}^{\mathrm{*}} = 30.4$ $μ$s, $T_\mathrm{2}^{\mathrm{Hahn}} = 803$ $μ$s, and $T_1 = 6.3$ s. Crucially, the dominant operational errors originate from residual nuclear spin carrying isotopes, solvable with further isotopic purification, rather than charge noise arising from the dielectric environment. Our results answer the longstanding question whether the favourable properties including high-fidelity operation and long coherence times can be preserved when transitioning from a tailored academic to an industrial semiconductor fabrication technology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_15590 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A 300 mm foundry silicon spin qubit unit cell exceeding 99% fidelity in all operations Steinacker, Paul Stuyck, Nard Dumoulin Lim, Wee Han Tanttu, Tuomo Feng, MengKe Nickl, Andreas Serrano, Santiago Candido, Marco Cifuentes, Jesus D. Hudson, Fay E. Chan, Kok Wai Kubicek, Stefan Jussot, Julien Canvel, Yann Beyne, Sofie Shimura, Yosuke Loo, Roger Godfrin, Clement Raes, Bart Baudot, Sylvain Wan, Danny Laucht, Arne Yang, Chih Hwan Saraiva, Andre Escott, Christopher C. De Greve, Kristiaan Dzurak, Andrew S. Mesoscale and Nanoscale Physics Quantum Physics Fabrication of quantum processors in advanced 300 mm wafer-scale complementary metal-oxide-semiconductor (CMOS) foundries provides a unique scaling pathway towards commercially viable quantum computing with potentially millions of qubits on a single chip. Here, we show precise qubit operation of a silicon two-qubit device made in a 300 mm semiconductor processing line. The key metrics including single- and two-qubit control fidelities exceed 99% and state preparation and measurement fidelity exceeds 99.9%, as evidenced by gate set tomography (GST). We report coherence and lifetimes up to $T_\mathrm{2}^{\mathrm{*}} = 30.4$ $μ$s, $T_\mathrm{2}^{\mathrm{Hahn}} = 803$ $μ$s, and $T_1 = 6.3$ s. Crucially, the dominant operational errors originate from residual nuclear spin carrying isotopes, solvable with further isotopic purification, rather than charge noise arising from the dielectric environment. Our results answer the longstanding question whether the favourable properties including high-fidelity operation and long coherence times can be preserved when transitioning from a tailored academic to an industrial semiconductor fabrication technology. |
| title | A 300 mm foundry silicon spin qubit unit cell exceeding 99% fidelity in all operations |
| topic | Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2410.15590 |