Author Affiliations

Lyuba Kuznetsova,^*,1 C. Y. Wang,² V. M. Gkortsas,³ L. Diehl,¹ F. Kärtner,³ M. A. Belkin,⁴ A. Belyanin,⁵ X. Li,¹ D. Ham,¹ H. Schneider,⁶ H. C. Liu,⁷ and Federico Capasso¹

¹School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA

²Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA

³Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA

⁴Electrical & Computer Engineering, University of Texas at Austin, The University of Texas at Austin, Austin, Texas 78712, USA

⁵Department of Physics, Texas A&M University, College Station, Texas 77843, USA

⁶Institute of Ion Beam Physics and Materials Research, Forschungszentrum Dresden-Rossendorf, 01314 Dresden, Germany

⁷Institute for Microstructural Sciences, National Research Council, Ottawa K1A 0R6, Ontario, Canada

^*Corresponding author: lyuba@seas.harvard.edu