Quantum state discrimination enhanced by path signature
Quantum state discrimination enhanced by path signature
Quantum state discrimination plays an essential role in quantum technology, crucial for quantum error correction, metrology, and sensing. While conventional methods rely on integrating readout signals or classifying raw signals, we developed a method to extract information about state transitions during readout, based on the path signature method, a tool for analyzing stochastic time series. The hardware experiments demonstrate an improvement in transmon qutrit state readout fidelity from 85.9 ± 1.0% to 91.0 ± 0.5%, without the need for additional hardware. This method has the potential to become a foundational tool for quantum technology.
quant-ph
Cao, Shuxiang
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Shao, Zhen
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Zheng, Jian-Qing
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Alghadeer, Mohammed
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Fasciati, Simone D.
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Piscitelli, Michele
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Taravati, Sajjad
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Bakr, Mustafa
e9ad9391-8122-49f3-85f2-c945c10d8300
Lyons, Terry
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Leek, Peter
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14 February 2024
Cao, Shuxiang
6cd16673-7545-490d-86ab-30410feb2ad1
Shao, Zhen
8d349f5c-2295-4471-bd7b-52b6a9bf9cc1
Zheng, Jian-Qing
06ac8c6e-d3a5-42d6-a933-992975a30675
Alghadeer, Mohammed
b38fb4f2-8402-4b8d-91a3-1c311fbcdb34
Fasciati, Simone D.
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Piscitelli, Michele
1e9e726d-e40a-4ecb-8f39-4cb374723a34
Taravati, Sajjad
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Bakr, Mustafa
e9ad9391-8122-49f3-85f2-c945c10d8300
Lyons, Terry
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Leek, Peter
83bec238-7cf7-4a5a-a650-c49d4584b284
Cao, Shuxiang, Shao, Zhen, Zheng, Jian-Qing, Alghadeer, Mohammed, Fasciati, Simone D., Piscitelli, Michele, Taravati, Sajjad, Bakr, Mustafa, Lyons, Terry and Leek, Peter
(2024)
Quantum state discrimination enhanced by path signature
arXiv
7pp.
(doi:10.48550/arXiv.2402.09532).
Record type:
Monograph
(Working Paper)
Abstract
Quantum state discrimination plays an essential role in quantum technology, crucial for quantum error correction, metrology, and sensing. While conventional methods rely on integrating readout signals or classifying raw signals, we developed a method to extract information about state transitions during readout, based on the path signature method, a tool for analyzing stochastic time series. The hardware experiments demonstrate an improvement in transmon qutrit state readout fidelity from 85.9 ± 1.0% to 91.0 ± 0.5%, without the need for additional hardware. This method has the potential to become a foundational tool for quantum technology.
Text
2402.09532v1
- Author's Original
Available under License Other.
More information
Published date: 14 February 2024
Keywords:
quant-ph
Identifiers
Local EPrints ID: 487781
URI: http://eprints.soton.ac.uk/id/eprint/487781
PURE UUID: 144be4c3-c164-4286-9622-18b77dea25a3
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Date deposited: 05 Mar 2024 18:06
Last modified: 12 Nov 2024 03:14
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Contributors
Author:
Shuxiang Cao
Author:
Zhen Shao
Author:
Jian-Qing Zheng
Author:
Mohammed Alghadeer
Author:
Simone D. Fasciati
Author:
Michele Piscitelli
Author:
Sajjad Taravati
Author:
Mustafa Bakr
Author:
Terry Lyons
Author:
Peter Leek
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