Gil-Ho Lee1, Ko-Fan Huang1, Dmitri K. Efetov2, Di S. Wei1, Sean Hart1, Takashi Taniguchi3, Kenji Watanabe3, Amir Yacoby1, and Philip Kim1,* 1Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA 2Department of Electrical Engineering, M.I.T., Cambridge, MA 02138 3National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan *Correspondence and re...