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Quantum Control Landscapes and Traps

  • QUANTUM INFORMATICS: COMPUTING
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Abstract

Quantum control is a necessary tool for a variety of modern quantum technologies as it allows to optimally manipulate quantum systems for various tasks. Traps are points of local but not global optimum of the objective functional for a given quantum control problem. In a more general sense, traps are critical points of the objective functional which are hard to escape by local search algorithms. Here a review of some results of the analysis of possibility of having traps in landscapes of coherently controlled closed quantum systems is given. In one-qubit case, there are no traps. For special multilevel quantum systems, higher-order traps may appear.

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Funding

This work is supported by the Russian Science Foundation under grant no. 22-11-00330, https://rscf.ru/en/project/22-11-00330/.

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  1. Department of Mathematical Methods for Quantum Technologies, Steklov Mathematical Institute, Russian Academy of Sciences, 119991, Moscow, Russia

    B. O. Volkov & A. N. Pechen

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  1. B. O. Volkov
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  2. A. N. Pechen
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Correspondence to B. O. Volkov or A. N. Pechen.

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Volkov, B.O., Pechen, A.N. Quantum Control Landscapes and Traps. Russ Microelectron 52 (Suppl 1), S428–S431 (2023). https://doi.org/10.1134/S1063739723600796

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