Efficient exploration of Hamiltonian parameter space for optimal control of non-Markovian open quantum systems
MetadataShow full item record
Altmetrics Handle Statistics
Altmetrics DOI Statistics
We present a general method to efficiently design optimal control sequences for non-Markovian open quantum systems, and illustrate it by optimizing the shape of a laser pulse to prepare a quantum dot in a specific state. The optimization of control procedures for quantum systems with strong coupling to structured environments—where time-local descriptions fail—is a computationally challenging task. We modify the numerically exact time evolving matrix product operator (TEMPO) method, such that it allows the repeated computation of the time evolution of the reduced system density matrix for various sets of control parameters at very low computational cost. This method is potentially useful for studying numerous optimal control problems, in particular in solid state quantum devices where the coupling to vibrational modes is typically strong.
Fux , G E , Butler , E , Eastham , P R , Lovett , B W & Keeling , J 2021 , ' Efficient exploration of Hamiltonian parameter space for optimal control of non-Markovian open quantum systems ' , Physical Review Letters , vol. 126 , no. 20 , 200401 . https://doi.org/10.1103/PhysRevLett.126.200401
Physical Review Letters
Copyright © 2021 American Physical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at https://doi.org/10.1103/PhysRevLett.126.200401.
DescriptionFunding: G.E.F. acknowledges support from EPSRC (EP/L015110/1). B.W.L. and J.K. acknowledge support from EPSRC (EP/T014032/1). E.B. acknowledges support from the Irish Research Council (GOIPG/2019/1871), and P.R.E. acknowledges support from Science Foundation Ireland (15/IACA/3402).
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.