Fano–Kondo shot noise in a quantum dot embedded interferometer irradiated with microwave fields

•The quantum dot embedded Aharonov–Bohm interferometer under the perturbation of ac fields have been investigated.•The frequency-dependent shot noise formula has been derived.•The photon-assisted Fano–Kondo resonant shot noise and Fano factor have been evaluated.•The enhancement and suppression of shot noise can be adjusted by the applied photon irradiation.•The periodic oscillation versus Aharonov–Bohm phase shows plateaus and flat valleys.

The shot noise of a quantum dot embedded Aharonov–Bohm (AB) interferometer under the perturbation of microwave fields is investigated by employing equation of motion method. The frequency-dependent shot noise formula is derived, and the photon-assisted Fano–Kondo resonance, the suppression of Kondo peak are presented with increasing the direct tunneling strength. The interference and correlation of electrons induce the asymmetric resonant peak–valley behavior of shot noise. The enhancement and suppression of shot noise are resulting from the competition of incoherent correlation and destructive interference effects, and super-Poissonian and sub-Poissonian noise can be adjusted by the applied photon irradiation, gate bias, and direct tunneling strength. The periodic oscillation versus AB phase with period 2π appears to show plateaus and flat valleys.