This chapter gives the mathematical background necessary for understanding quantum mechanics used in the rest of the book. The abstract concept of a qubit as the quantum extension of a classical bit is first introduced. Characteristics of photons are then covered to lay the foundation for the multi-photon communication. An exposition of the polarization degree of freedom of photons in the multi-photon regime is made.
CITATION STYLE
Verma, P. K., El Rifai, M., & Chan, K. W. C. (2019). Mathematical Background. In Signals and Communication Technology (pp. 29–58). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-981-10-8618-2_2
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