1. Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
2. Department of Physics, Wake Forest University, Winston-Salem, North Carolina 27109, USA
3. Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA
4. Department of Information Technology and Electrical Engineering, ETH Zürich, 8092 Zürich, Switzerland
5. University of Texas at Austin, Austin, Texas 78712, USA
6. Thorlabs Quantum Electronics (TQE), Jessup, Maryland 20794, USA