Chakhmakhchyan, Levon; Cerf, Nicolas (2018). "Simulating arbitrary Gaussian circuits with linear optics". Physical Review A. 98: 062314. arXiv:1803.11534. doi:10.1103/PhysRevA.98.062314.
Fearn, H.; Loudon, R. (1987). "Quantum theory of the lossless beam splitter". Optics Communications. 64 (6): 485–490. doi:10.1016/0030-4018(87)90275-6.
Chakhmakhchyan, Levon; Cerf, Nicolas (2018). "Simulating arbitrary Gaussian circuits with linear optics". Physical Review A. 98: 062314. arXiv:1803.11534. doi:10.1103/PhysRevA.98.062314.