Efficient exploration of Hamiltonian parameter space for optimal control of non-Markovian open quantum systems
Abstract
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.
Citation
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
Publication
Physical Review Letters
Status
Peer reviewed
ISSN
0031-9007Type
Journal article
Description
Funding: 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).Collections
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