Bulletin of the American Physical Society
54th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 68, Number 7
Monday–Friday, June 5–9, 2023; Spokane, Washington
Session N01: Poster Session II (4:00pm-6:00pm, PT)
4:00 PM,
Wednesday, June 7, 2023
Room: Exhibit Hall C
Abstract: N01.00093 : Scalable Protocols for Characterization of Correlated non-Markovian Noise in Trapped-Ion Quantum Processors*
Presenter:
Omid Khosravani
(Duke University)
Author:
Omid Khosravani
(Duke University)
Characterizing noise is crucial for improving quantum control and error mitigation protocols as well as designing quantum error-correcting codes and decoders. An important source of errors is the non-Markovian noise which has recently been shown cite{P} to lead to non-trivial dynamics in logical qubits in trapped-ion quantum processors. A less understood source of non-Markovian noise in trapped-ion quantum processors is due to unknown dynamics of interactions between spins and the bosonic bath comprised of the motional states of ions under correlated electric-field noise. Two difficulties arise in characterizing this noise which include the infinite dimensionality of the Fock space of the bosonic bath as well as the non-local nature of the spin-boson dynamics induced by spatially correlated electric field noise. Here, we introduce a scalable protocol to characterize this source of correlated non-Markovian noise, which requires quadratic number of gates for a given number of qubits. We then use the spectroscopic information of this protocol to predict the noise dynamics in a logical qubit. We further introduce a scalable protocol to characterize the correlated non-Markovian noise in a logical qubit and compare the predictions of the first protocol with the second protocol. We discuss a potential route to extend our protocols to characterize the correlated non-Markovian noise in logical gate operations with trapped-ion quantum processors.
egin{thebibliography}{999}
ibitem{P}Pal, A., Schindler, P., Erhard, A., Rivas, Á., Martin-Delgado, M., Blatt, R., Monz, T. & Müller, M. Relaxation times do not capture logical qubit dynamics. {em Quantum}. extbf{6} pp. 632 (2022,1), https://doi.org/10.22331/q-2022-01-24-632
end{thebibliography}
end{document}
*We acknowledge the support of the US DOE for this work.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700