of 17
Supplementary Information for: ‘Two-Dimensional Optomechanical Crystal Cavity
With High Quantum Cooperativity’
Hengjiang Ren,
1, 2, 3
Matthew H. Matheny,
1, 2, 3
Gregory S. MacCabe,
1, 2, 3
Jie
Luo,
1, 2, 3
Hannes Pfeifer,
4,
Mohammad Mirhosseini,
1, 2, 3
and Oskar Painter
1, 2, 3,
1
Thomas J. Watson, Sr., Laboratory of Applied Physics,
California Institute of Technology, Pasadena, California 91125, USA
2
Kavli Nanoscience Institute, California Institute of Technology, Pasadena, California 91125, USA
3
Institute for Quantum Information and Matter,
California Institute of Technology, Pasadena, California 91125, USA
4
Max Planck Institute for the Science of Light, Staudtstrasse 2, 91058 Erlangen, Germany
(Dated: May 17, 2020)
Current Address: Institut f ̈ur Angewandte Physik, Universit ̈at Bonn, Wegelerstraße 8, 53115 Bonn, Germany
opainter@caltech.edu; http://copilot.caltech.edu
2
50
100
150
200
250
300
350
400
h
o,c
(nm)
40
50
60
70
80
90
100
110
120
130
140
h
i,c
(nm)
0.5
1.0
FIG. S-1.
Nelder-Mead simplex search pattern.
A slice of the multidimensional parameter space explored by the Nelder-
Mead minimization method. The color of the points indicate the normalized value of the fitness function. This slice includes
multiple Nelder-Mead search runs with randomly generated starting points and convergence to multiple hot-spots in the two-
dimensional space of
h
i,c
and
h
o,c
.