  We describe a proposed experimental search for exotic spin-dependent
interactions using rotationally modulated source masses and an atomic
magnetometer array. Rather than further improving the magnetometer sensitivity,
noise reduction can be another way to reach higher measurement precision. In
this work, we propose to use modulating techniques of the source masses to
reduce the noise of the experiment. Better precision can be achieved if the
fundamental frequency and harmonics of the rotating source masses are used to
detect the new interactions. Furthermore, if an array of magnetometers are
applied, the statistic precision can be improved, and some common noises can be
canceled. Our analysis and simulations indicate that the proposed experiment
scheme can improve the detection precisions of three types of spin-dependent
interactions by as much as $\sim$5 orders in the force range of $\sim$cm to
$\sim$10m.
