1. Cornell University School of Electrical and Computer Engineering Ithaca NY 14850 USA
2. Photonics Initiative Advanced Science Research Center City University of New York New York 10031 USA
3. Center for Nanophotonics AMOLF Amsterdam The Netherlands
4. Van der Waals‐Zeeman Institute Institute of Physics University of Amsterdam Amsterdam The Netherlands
5. Physics Program Graduate Center City University of New York New York 10016 USA
6. Department of Electrical Engineering City College of The City University of New York New York 10031 USA