krotov’s method
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2019 ◽  
Vol 7 (6) ◽  
Author(s):  
Michael Goerz ◽  
Daniel Basilewitsch ◽  
Fernando Gago-Encinas ◽  
Matthias G. Krauss ◽  
Karl P. Horn ◽  
...  

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 range of quantum control problems, including state-to-state transfer, quantum gate implementation and optimization towards an arbitrary perfect entangler. Krotov's method compares to other gradient-based optimization methods such as gradient-ascent and guarantees monotonic convergence for approximately time-continuous control fields. The user-friendly interface allows for combination with other Python packages, and thus high-level customization.


2012 ◽  
Vol 136 (10) ◽  
pp. 104103 ◽  
Author(s):  
Daniel M. Reich ◽  
Mamadou Ndong ◽  
Christiane P. Koch

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