Shot noise in a multiterminal mesoscopic system with microwave field response

We have investigated the shot noise and differential shot noise of the system with a quantum dot coupled to N electron reservoirs. An external microwave field is applied to the system, and the quantum dot is imposed with a Zeeman field. The general time-dependent noise formula is derived, and the pseudoequilibrium shot noise has been evaluated numerically at zero temperature. The photon-assisted shot noise, Zeeman split spectra, and resonant structures are displayed. In the presence of the microwave field and Zeeman magnetic field, the shot noise exhibits significant behaviors associated with resonant tunneling. The investigation implies that the suppression or enhancement of shot noise can be controlled by external fields.