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We investigate the quantum transport dynamics of electrons in a multi-pathAharonov-Bohm interferometer comprising several parallel graphene nanoribbons.At low magnetic field strengths, the conductance displays a complex oscillatorybehavior stemming from the interference of electron wave functions fromdifferent paths, reminiscent of the diffraction grating in optics. Withincreasing magnetic field strength, certain nanoribbons experience transportblockade, leading to conventional Aharonov-Bohm oscillations arising fromtwo-path interference. We also discuss the impact of edge effects and theinfluence of finite temperature. Our findings offer valuable insights forexperimental investigations of quantum transport in multi-path devices andtheir potential application for interferometry and quantum sensing.

Quantum transport in a multi-path graphene Aharonov-Bohm inteferometer