1. N. Wiener, Cybernetics: Or Control and Communication in the Animal and the Machine (Cambridge Univ. Press, Cambridge, 1961).
2. J. Zhang, arXiv: 1407.8536v3 (2014).
3. Y. Yamamoto, N. Imoto, and S. Machida, Phys. Rev. A 33, 3243 (1986).
4. J. H. Shapiro, G. Saplakoglu, S.-T. Ho, P. Kumar, B. E. A. Saleh, and M. C. Teich, J. Opt. Soc. Am. B 4, 1604 (1987).
5. H. M. Wiseman and G. J. Milburn, Quantum Measurement and Control (Cambridge Univ. Press, Cambridge, 2010).