# Mach-Zehnder interferometry using spin- and valley-polarized quantum Hall edge states in graphene

@article{Wei2017MachZehnderIU, title={Mach-Zehnder interferometry using spin- and valley-polarized quantum Hall edge states in graphene}, author={Di S Wei and Toeno van der Sar and Javier D Sanchez-Yamagishi and Kenji Watanabe and Takashi Taniguchi and Pablo Jarillo-Herrero and Bertrand I. Halperin and Amir Yacoby}, journal={Science Advances}, year={2017}, volume={3} }

We realize an electronic Mach-Zehnder interferometer with quantum Hall edge channels along a pn junction in graphene. Confined to a two-dimensional plane, electrons in a strong magnetic field travel along the edge in one-dimensional quantum Hall channels that are protected against backscattering. These channels can be used as solid-state analogs of monochromatic beams of light, providing a unique platform for studying electron interference. Electron interferometry is regarded as one of the most…

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## 42 Citations

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