adaptive numerical optimization for high-fidelity quantum gate vontrol in atom interferometers

The atomic interferometer has two quantum unitary gates that must be realized for quantum sensing purposes: the atomic gravimeter and the atomic interferometer gyroscope. an optimal cost function that defines the distance between two unitary operators is defined. based on it, general adaptive (gada) algorithms for optimization-based quantum control are innovated to realize the atomic mirror and beam-splitter gates. we used optimal quantum control to realize those atom interferometer gates. we obtained gate fidelities of 0.99980 and 0.99998 for the mirror and the beam-splitter gates, respectively. in this research, a two-level atom system with clock transitions1s_0 -->3p_0 of strontium (87sr) atom was employed.