Dragging of light by moving dielectrics was predicted by Fresnel and verified by Fizeau’s celebrated experiments with flowing water. This momentous discovery is among the experimental cornerstones of Einstein’s special relativity and is well understood in the context of relativistic kinematics. In contrast, experiments on dragging photons by an electron flow in solids are eluded in agreement with the theory. Here we report on the electron flow dragging surface plasmon polaritons (SPPs): hybrid quasiparticles of infrared photons and electrons in graphene. The drag is visualized directly through infrared nano-imaging of propagating plasmonic waves in the presence of a high-density current. The polaritons in graphene shorten their wavelength when launched against the drifting carriers. Unlike the Fizeau effect for light, the SPP drag by electrical currents defies the simple kinematics interpretation and is linked to the nonlinear electrodynamics of the Dirac electrons in graphene. The observed plasmonic Fizeau drag enables breaking of time-reversal symmetry and reciprocity at infrared frequencies without resorting to magnetic fields, or chiral optical pumping.
*DOE and NSF grants DESC0019443, DESC0019300, DMR0819762, CMMI1538127; ONR, AFOSR, Pappalardo Fellowship and Moore Fdn grants.
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Presenters
Yinan Dong
Columbia Univ
Columbia University
Authors
Yinan Dong
Columbia Univ
Columbia University
Lin Xiong
Department of Physics, Columbia University
Columbia Univ
Columbia University
Isabelle Y Phinney
MIT
Physics, Massachusetts Institute of Technology
Zhiyuan Sun
Columbia University
Department of Physics, Columbia University
Columbia Univ
Ran Jing
Columbia University
Columbia Univ
Alexander McLeod
Columbia University
Department of Physics, Columbia University
Columbia Univ
Physics, Columbia University
Shuai Zhang
Department of Physics, Columbia University
Columbia Univ
Columbia University
Song Liu
Columbia University
Mechanical Engineering, Columbia
Department of Mechanical Engineering, Columbia University
Columbia Univ
Haoyang Gao
MIT
Zhiyu Dong
Massachusetts Institute of Technology MIT
MIT
Richard Pan
Columbia University
James Edgar
Chemical Engineering, Kansas State University
Kansas State University
Tim Taylor Department of Chemical Engineering, Kansas State University
Pablo Jarillo-Herrero
MIT
Massachusetts Institute of Technology MIT
Department of Physics, Massachusetts Institute of Technology
Massachusetts Institute of Technology
Physics, Massachusetts Institute of Technology
Leonid Levitov
Massachusetts Institute of Technology MIT
MIT
Physics, Massachusetts Institute of Technology
Andrew Millis
Columbia University
Department of Physics, Columbia University
Flatiron Institute
Columbia Univ
Center for Computational Quantum Physics, Flatiron Institute
Flatiron Institute; Columbia Univ.
Columbia University and Center for Computational Quantum Physics, Flatiron Institute
Michael Fogler
University of California, San Diego
Department of Physics, University of California San Diego
UC San Diego
Department of Physics, University of California, San Diego