Abstract

It is a promising research for optimization of quantum gate in the field of quantum computation. We investigate the feasibility of implementing the single-qubit gate (Hadamard) in molecular rotational system. By applying the Multi-constraint quantum optimal control method, the excepted final states can be achieved based on the molecular rotational states both in resonant and non-resonant cases with the control pulses. The permanent electric dipole moment is ignored in non-resonance. Besides, the zero-pulse area constraint and the constant fluence constraint are employed to optimize shapes of control pulses. Finally, we show that the Hadamard gate can be realized with the high fidelity (0.9999) and also examine the dependence of the fidelity on pulse fluence as well as the control pulse.

Details

Title
Resonant and non-resonant optimizations by multi-constraint quantum control theory in molecular rotational states
Author
Li, Jin-Fang 1 ; Hu, Jie-Ru 2 ; Guo, Qiu-Fen 1 ; He, Dong-Shan 1 

 Xianyang Normal University, Department of Physics and Electronic Engineering, Shaanxi, China (GRID:grid.459947.2) (ISNI:0000 0004 1765 5556) 
 East China Normal University, State Key Laboratory of Precision Spectroscopy, Department of Physics, Shanghai, China (GRID:grid.22069.3f) (ISNI:0000 0004 0369 6365) 
Publication year
2022
Publication date
2022
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2734856836
Copyright
© The Author(s) 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.