Nonequilibrium dephasing in an electronic Mach-Zehnder interferometer.
We study nonequilibrium dephasing in an electronic Mach-Zehnder interferometer. We demonstrate that the shot noise at the beam splitter of the interferometer generates an ensemble of nonequilibrium electron density configurations and that electron interactions induce configuration-specific phase shifts of an interfering electron. The resulting dephasing exhibits two characteristic features, a lobe pattern in the visibility and phase jumps of pi, in good agreement with experimental data.
Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, Korea.
Seok-Chan
SC
Youn
Hyun-Woo
HW
Lee
H-S
HS
Sim