@misc{clements2016optimal,
  title={An Optimal Design for Universal Multiport Interferometers},
  author={William R. Clements and Peter C. Humphreys and Benjamin J. Metcalf and W. Steven Kolthammer and Ian A. Walmsley},
  year={2016},
  eprint={1603.08788},
  archivePrefix={arXiv},
  primaryClass={physics.optics},
  url={https://arxiv.org/abs/1603.08788}
}