27 citations · 53 across the 2 of their papers we have counts for
7 papers · 1 filter
Optimally controlled quantum discrimination and estimation
Daniel Basilewitsch, Haidong Yuan, Christiane P. Koch
Quantum discrimination and estimation are pivotal for many quantum technologies, and their performance depends on the optimal choice of probe state and measurement. Here we show th…
Fundamental Bounds on Qubit Reset
Daniel Basilewitsch, Jonas Fischer, Daniel M. Reich +2
Qubit reset is a basic prerequisite for operating quantum devices, requiring the export of entropy. The fastest and most accurate way to reset a qubit is obtained by coupling the q…
Reservoir Engineering using Quantum Optimal Control for Qubit Reset
Daniel Basilewitsch, Francesco Cosco, Nicola Lo Gullo +4
We determine how to optimally reset a superconducting qubit which interacts with a thermal environment in such a way that the coupling strength is tunable. Describing the system in…
Krotov: A Python implementation of Krotov's method for quantum optimal control
Michael H. Goerz, Daniel Basilewitsch, Fernando Gago-Encinas +4
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…
Time-optimal purification of a qubit in contact with a structured environment
Jonas Fischer, Daniel Basilewitsch, Christiane P. Koch +1
We investigate the time-optimal control of the purification of a qubit interacting with a structured environment, consisting of a strongly coupled two-level defect in interaction w…
Quantum Optimal Control for Mixed State Squeezing in Cavity Optomechanics
Daniel Basilewitsch, Christiane P. Koch, Daniel M. Reich
The performance of key tasks in quantum technology, such as accurate state preparation, can be maximized by utilizing external controls and deriving their shape with optimal contro…