Quantum optimal control, a toolbox for devising and implementing the shapes of external
fields that accomplish given tasks in the operation of a quantum device in the best way …

Optimal control theory is a powerful mathematical tool, which has known a rapid
development since the 1950s, mainly for engineering applications. More recently, it has …

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 …

Active qubit reset is a key operation in many quantum algorithms, and particularly in
quantum error correction. Here, we experimentally demonstrate a reset scheme for a three …

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 …

Quantum computers present a compelling platform for the study of open quantum systems,
namely, the nonunitary dynamics of a system. Here, we investigate and report digital …

In this work we study how the non-Markovian character of the dynamics can affect the
thermodynamic performance of a quantum thermal engine, by analyzing the maximum …

We present a theoretical study of the optimal control of a qubit interacting with a structured
environment. We consider a model system in which the bath is a bosonic reservoir at zero …

This paper presents a framework for solving the pure-state preparation problem using
numerical optimal control. As an example, we consider the case where a number of qubits …

Practical implementations of quantum technologies require preparation of states with a high
degree of purity—or, in thermodynamic terms, very low temperatures. Given finite resources …