Author Affiliations

I. Brener,¹ X. G. Peralta,¹ W. J. Padilla,² E. W. Young,¹ A. J. Hoffman,³ M. J. Cich,¹ R. D. Averitt,⁴ M. C. Wanke,¹ J. B. Wright,¹ H.-T. Chen,⁵ J. F. O’Hara,⁵ A. J. Taylor,⁵ J. Waldman,⁶ W. D. Goodhue,⁶ and J. Li⁶

¹CINT and Sandia National Laboratories, P. O. Box 5800, MS1082, Albuquerque, NM 87185, USA

²Boston College, Department of Physics, 140 Commonwealth Ave. Chestnut Hill, MA 02467, USA

³Princeton University, Department of Electrical Engineering, Princeton, NJ 08540, USA

⁴Boston University, Department of Physics, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA

⁵MPA-CINT, Los Alamos National Laboratory, P.O. Box 1663, MS K771, Los Alamos, NM 87545, USA

⁶University of Massachusetts Lowell, Department of Physics, Lowell, MA 01854, USA