Generation of vacuum squeezing fields via self-roration in Rb vapor

As the first part of our ``Sub-shot noise limited quantum atomic magnetometer'' program, this paper proposes a theoretical method of generating the source for the fore-mentioned magnetometer--vacuum squeezing field induced by self-rotation in Rb vapor. We derives a full quantum mechanical description, in contrast with previous semi-classical work, for such a field-atom system. Finally, considering self-rotation as a classical phenomenon, we explains its relation with vacuum squeezing in detail.