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AbstractWe applied an optimal control algorithm to an ultra-cold atomic system for constructing an atomic Sagnac interferometer in a ring trap. We constructed a ring potential on an atom chip by using an RF-dressed potential. A field gradient along the radial direction in a ring trap known as the dimple-ring trap is generated by using an additional RF field. The position of the dimple is moved by changing the phase of the RF field . For Sagnac interferometers, we suggest transferringdoi:10.1515/phys-2020-0171 fatcat:ng6jatxejffi5dpb2fveygdkjm