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Coherent dynamical control of quantum processes

Rezvani, V ; Sharif University of Technology | 2021

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  1. Type of Document: Article
  2. DOI: 10.1103/PhysRevA.104.012215
  3. Publisher: American Physical Society , 2021
  4. Abstract:
  5. Manipulation of a quantum system requires the knowledge of how it evolves. To impose that the dynamics of a system becomes a particular target operation (for any preparation of the system), it may be more useful to have an equation of motion for the dynamics itself, rather than the state. Here we develop a Markovian master equation for the process matrix of an open system interacting with a reservoir, which resembles the Lindblad Markovian master equation. We employ this equation to introduce a scheme for optimal local coherent process control at target times and extend the Krotov technique to obtain optimal control. We illustrate utility of this framework through several quantum coherent-control scenarios, such as optimal decoherence suppression, gate simulation, and passive and indirect control of the reservoir, in all of which we aim to simulate a given terminal process at a given final time. © 2021 American Physical Society
  6. Keywords:
  7. Equations of motion ; Quantum theory ; Coherent process ; Decoherence suppression ; Dynamical control ; Equation of motion ; Indirect control ; Markovian master equation ; Optimal controls ; Quantum coherent control ; Process control
  8. Source: Physical Review A ; Volume 104, Issue 1 , 2021 ; 24699926 (ISSN)
  9. URL: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.104.012215