Krotov method for optimal control of closed quantum systems

OV Morzhin, AN Pechen - Russian Mathematical Surveys, 2019 - iopscience.iop.org
The mathematics of optimal control of quantum systems is of great interest in connection with
fundamental problems of physics as well as with existing and prospective applications to …

Krotov: A Python implementation of Krotov's method for quantum optimal control

M Goerz, D Basilewitsch, F Gago-Encinas, MG Krauss… - SciPost physics, 2019 - scipost.org
We present a new open-source Python package, krotov, implementing the quantum optimal
control method of that name. It allows to determine time-dependent external fields for a wide …

Charting the circuit QED design landscape using optimal control theory

MH Goerz, F Motzoi, KB Whaley, CP Koch - npj Quantum Information, 2017 - nature.com
With recent improvements in coherence times, superconducting transmon qubits have
become a promising platform for quantum computing. They can be flexibly engineered over …

Control landscapes for high-fidelity generation of C-NOT and C-PHASE gates with coherent and environmental driving

AN Pechen, VN Petruhanov, OV Morzhin… - The European Physical …, 2024 - Springer
High-fidelity generation of two-qubit gates is important for quantum computation, since such
gates are components of popular universal sets of gates. Here, we consider the problem of …

Optimal control for state preparation in two-qubit open quantum systems driven by coherent and incoherent controls via GRAPE approach

VN Petruhanov, AN Pechen - International Journal of Modern …, 2022 - World Scientific
In this work, we consider a model of two qubits driven by coherent and incoherent time-
dependent controls. The dynamics of the system is governed by a Gorini–Kossakowski …

Maximization of the overlap between density matrices for a two-level open quantum system driven by coherent and incoherent controls

OV Morzhin, AN Pechen - Lobachevskii Journal of Mathematics, 2019 - Springer
The article considers a two-level open quantum system evolving under the action of
coherent and incoherent controls using the general control method proposed in Phys. Rev …

Krotov type optimization of coherent and incoherent controls for open two-qubit systems

O Morzhin, A Pechen - arXiv preprint arXiv:2308.06119, 2023 - arxiv.org
This work considers two-qubit open quantum systems driven by coherent and incoherent
controls. Incoherent control induces time-dependent decoherence rates via time-dependent …

Generation of C-NOT, SWAP, and CZ Gates for two qubits using coherent and incoherent controls and stochastic optimization

OV Morzhin, AN Pechen - Lobachevskii Journal of Mathematics, 2024 - Springer
In this work, we consider a general form of the dynamics of open quantum systems
determined by the Gorini–Kossakowsky–Sudarchhan–Lindblad type master equation with …

A Modified Deep Q-Learning Algorithm for Optimal and Robust Quantum Gate Design of a Single Qubit System

O Shindi, Q Yu, P Girdhar… - 2022 IEEE International …, 2022 - ieeexplore.ieee.org
Precise and resilient quantum gate design is important for the building of quantum devices.
In this paper, we consider the optimal and robust quantum gate design problem for three …

Optimal Control of Quantum Information Tasks in Open Quantum Systems

D Basilewitsch - 2020 - kobra.uni-kassel.de
Every quantum system inevitably interacts with its environment. This is a fundamental
requirement that allows us to control, measure and, in general, interact with quantum …