Bulletin of the American Physical Society
55th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Monday–Friday, June 3–7, 2024; Fort Worth, Texas
Session C08: Control and Measurement of Mesoscopic Systems
2:00 PM–4:00 PM,
Tuesday, June 4, 2024
Room: 203B
Chair: Grace Liang
Abstract: C08.00009 : Diagnosing hardware and gate errors in trapped ions using reduced Choi-matrix tomography*
3:36 PM–3:48 PM
Presenter:
Elia Perego
(University of California, Berkeley)
Authors:
Elia Perego
(University of California, Berkeley)
Andrea Rodriguez-Blanco
(University California Berkeley)
Birgitta Whaley
(University of California, Berkeley)
Bharath Hebbe Madhusudhana
(Los Alamos National Laboratory)
To accomplish this task, we introduce a benchmarking technique based on reduced Choi-matrix tomography [1, 2], the properties of which provide immediate and valulable insights into unknown quantum processes affecting the target unitary. Remarkably, this method eliminates the need for exhaustive knowledge of all noise sources affecting the system.
We tested and validated the effectiveness of this technique on a single qubit gate implemented using a Calcium trapped ion. Furthermore, intentional noise injection served to confirm the method's reliability for error detection and identification.
This approach can be easily extended to cover the two-qubit gate scenario, and seamlessly integrated into the regular calibration and maintenance procedures for the experimental hardware.
[1] B. H. Madhusudhana. Benchmarking multi-qubit gates – I: Metrological aspects, 2023, arXiv: 2210.04330.
[2] B. H. Madhusudhana. Benchmarking multi-qubit gates – II: Computational aspects, 2023, arXiv: 2301.07109.
*CIQC, QSA, LANL's LDRD
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