Inherent Mach-Zehnder interference with “which-way” detection for single-particle scattering in one dimension
Lan Zhou, Yue Chang, Hui Dong, Le‐Man Kuang, C. P. Sun · Physical Review A · 2012
We study the coherent transport of a single photon in a one-dimensional coupled-resonator array, nonlocally coupled to a two-level system. Since its inherent structure is a Mach-Zehnder interferometer, we explain the destructive interference phenomenon of the transmission spectra according to the effect of which-way detection. The quantum realization of the present model is a nanoelectromechanical resonator array with two nearest resonators coupled to a single spin via their attached magnetic tips. Its classical simulation is a waveguide of a coupled-defected cavity array with double couplings to a side-defected cavity.