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Quantum state discrimination enhanced by path signature

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
arXiv
Cao, Shuxiang
ae9b944b-8270-4eaf-a58c-67a09f2ef516
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.
d6308c65-53a2-486e-be7c-40ea75e18a0e
Piscitelli, Michele
1e9e726d-e40a-4ecb-8f39-4cb374723a34
Taravati, Sajjad
0026f25d-c919-4273-b956-8fe9795b31ce
Bakr, Mustafa
e9ad9391-8122-49f3-85f2-c945c10d8300
Lyons, Terry
941d109b-1877-42a7-9d8b-547c61403c7e
Leek, Peter
83bec238-7cf7-4a5a-a650-c49d4584b284
Cao, Shuxiang
ae9b944b-8270-4eaf-a58c-67a09f2ef516
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.
d6308c65-53a2-486e-be7c-40ea75e18a0e
Piscitelli, Michele
1e9e726d-e40a-4ecb-8f39-4cb374723a34
Taravati, Sajjad
0026f25d-c919-4273-b956-8fe9795b31ce
Bakr, Mustafa
e9ad9391-8122-49f3-85f2-c945c10d8300
Lyons, Terry
941d109b-1877-42a7-9d8b-547c61403c7e
Leek, Peter
83bec238-7cf7-4a5a-a650-c49d4584b284

[Unknown type: UNSPECIFIED]

Record type: UNSPECIFIED

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.

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2402.09532v1 - Author's Original
Available under License Other.
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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
ORCID for Sajjad Taravati: ORCID iD orcid.org/0000-0003-3992-0050

Catalogue record

Date deposited: 05 Mar 2024 18:06
Last modified: 29 Apr 2024 02:04

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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 ORCID iD
Author: Mustafa Bakr
Author: Terry Lyons
Author: Peter Leek

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