From quantum optimal control theory to coherent destruction of tunneling
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Received in final form: 23 November 2018
Published online: 23 January 2019
In this paper, we study coherent destruction of tunneling in driven spin-boson model. We formulate this physical process as a quantum optimal control problem. A running cost functional has been used to address the optimal control problem at hand. The dynamic is described by a Born–Markov master equation derived using the Bloch–Redfield formalism. We use the techniques of automatic differentiation to compute the gradient for the cost functional. We write the optimal control field as monochromatic plane wave. The robustness of the control profile against temperature and the system–bath coupling variations are also analyzed.
Key words: Mesoscopic and Nanoscale Systems
© EDP Sciences / Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature, 2019