Cameron J. R. Duncan⁶, Brian Kaufman⁶, Mianzhen Mo⁶, Alexander H. Reid⁶, Giulio Cerullo^7,8, Alfred Zong^9,1,2,†, and Michael W. Zuerch^3,4,‡

• ¹Department of Applied Physics, Stanford University, Stanford, California 94305, USA
• ²Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
• ³Department of Chemistry, University of California, Berkeley, California 94720, USA
• ⁴Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
• ⁵Department of Physics, University of California, Berkeley, California 94720, USA
• ⁶SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
• ⁷Department of Physics, Politecnico di Milano, Piazza Leonardo da Vinci 32, Milan 20133, Italy
• ⁸CNR-IFN, Piazza Leonardo da Vinci 32, Milan 20133, Italy
• ⁹Department of Physics, Stanford University, Stanford, California 94305, USA

• ^*These authors contributed equally to this work.
• ^†Contact author: alfredz@stanford.edu
• ^‡Contact author: mwz@berkeley.edu