A numerical approach for calculating exact non-adiabatic terms in quantum dynamics
Lawrence, Ewen D C and Schmid, Sebastian F J and Čepaitė, Ieva and Kirton, Peter and Duncan, Callum W (2024) A numerical approach for calculating exact non-adiabatic terms in quantum dynamics. Other. arXiv.
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Abstract
Understanding how non-adiabatic terms affect quantum dynamics is fundamental to improving various protocols for quantum technologies. We present a novel approach to computing the Adiabatic Gauge Potential (AGP), which gives information on the non-adiabatic terms that arise from time dependence in the Hamiltonian. Our approach uses commutators of the Hamiltonian to build up an appropriate basis of the AGP, which can be easily truncated to give an approximate form when the exact result is intractable. We use this approach to study the AGP obtained for the transverse field Ising model on a variety of graphs, showing how the different underlying graph structures can give rise to very different scaling for the number of terms required in the AGP.
ORCID iDs
Lawrence, Ewen D C, Schmid, Sebastian F J, Čepaitė, Ieva, Kirton, Peter ORCID: https://orcid.org/0000-0002-3915-1098 and Duncan, Callum W ORCID: https://orcid.org/0000-0003-3625-9842;-
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Item type: Monograph(Other) ID code: 90409 Dates: DateEvent19 January 2024Published19 January 2024SubmittedSubjects: Science > Physics Department: Faculty of Science > Physics Depositing user: Pure Administrator Date deposited: 29 Aug 2024 13:03 Last modified: 03 Oct 2024 09:56 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/90409