M. Givon⁸, Z. D. Grujić⁹, H. Guo¹⁰, M. P. Hedges¹¹, D. F. Jackson Kimball¹², D. Kim^13,14,†, E. Klinger¹⁵, T. Kornack¹⁶, A. Kryemadhi¹⁷, N. Kukowski¹⁸, G. Łukasiewicz^19,20, H. Masia-Roig^3,4,5, M. Padniuk¹⁹, C. A. Palm¹², S. Y. Park^21,‡, X. Peng¹⁰, M. Pospelov^22,23, S. Pustelny¹⁹, Y. Rosenzweig⁸, O. M. Ruimi^24,3,4,5, P. C. Segura^21,§, T. Scholtes²⁵, Y. K. Semertzidis^13,14, Y. C. Shin¹³, J. E. Stalnaker²¹, D. Tandon^21,∥, A. Weis²⁶, A. Wickenbrock^3,4,5, T. Z. Wilson^12,¶, T. Wu¹⁰, J. Zhang¹⁰, and Y. Zhao¹⁰

• ¹Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
• ²Department of Physics and Astronomy, Bucknell University, Lewisburg, Pennsylvania 17837, USA
• ³Helmholtz Institute Mainz, 55099 Mainz, Germany
• ⁴GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
• ⁵Johannes Gutenberg-Universität Mainz, 55128 Mainz, Germany
• ⁶Research School of Physics, Australian National University, Canberra, Australian Capital Territory 2601, Australia
• ⁷Department of Physics, University of California, Berkeley, California 94720, USA
• ⁸Department of Physics, Ben-Gurion University of the Negev, Be’er Sheva 84105, Israel
• ⁹Institute of Physic Belgrade, University of Belgrade, 11080 Belgrade, Serbia
• ¹⁰Department of Electronics, State Key Laboratory of Advanced Optical Communication Systems and Networks, and Center for Quantum Information Technology, Peking University, Beijing 100871, China
• ¹¹Centre for Quantum Computation and Communication Technology, Research School of Physics, The Australian National University, Acton, Canberra, Australian Capital Territory 2601, Australia
• ¹²Department of Physics, California State University-East Bay, Hayward, California 94542-3084, USA
• ¹³Center for Axion and Precision Physics Research, IBS, Daejeon 34051, Republic of Korea
• ¹⁴Department of Physics, KAIST, Daejeon 34141, Republic of Korea
• ¹⁵Université Marie et Louis Pasteur, SUPMICROTECH, CNRS, Institut FEMTO-ST, F-25000 Besançon, France
• ¹⁶Twinleaf LLC, 300 Deer Creek Drive, Plainsboro, New Jersey 08536, USA
• ¹⁷Department of Computing, Math and Physics, Messiah University, Mechanicsburg, Pennsylvania 17055, USA
• ¹⁸Friedrich Schiller University Jena, Institute of Geosciences, Burgweg 11, D-07749 Jena, Germany
• ¹⁹Institute of Physics, Jagiellonian University in Krakow, ulica Profesora Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
• ²⁰Doctoral School of Exact and Natural Sciences, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland
• ²¹Department of Physics and Astronomy, Oberlin College, Oberlin, Ohio 44074, USA
• ²²School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
• ²³William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
• ²⁴Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem 9190401, Israel
• ²⁵Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, D-07745 Jena, Germany
• ²⁶Physics Department, University of Fribourg, CH-1700 Fribourg, Switzerland

• ^*Contact author: skhamis@physics.ucla.edu
• ^†Present address: Mechatronics Research, Samsung Electronics, Hwaseong 18448, South Korea.
• ^‡Present address: Department of Physics, University of Colorado, Boulder, Colorado 80309, USA.
• ^§Present address: Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
• ^∥Present address: Department of Physics, Stanford University, Stanford, California 94305, USA.
• ^¶Present address: Department of Physics, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, USA.