Abstract
The QKD system demonstrated in Chap. 3 is based on a four-dimensional time-phase encoding scheme in which time basis states are used to generate a secret key and phase basis states are used to monitor the presence of an eavesdropper. The system can generate a secret key at a high rate, mainly due to the greater information content of the high-dimensional quantum states and a multiplexed detection scheme. Given the success of the d = 4 protocol, an important subsequent question to address is: does increasing the dimension beyond d = 4 increase the secret key rate under realistic experimental conditions?
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Islam, N.T. (2018). Scalable High-Dimensional Time-Bin QKD. In: High-Rate, High-Dimensional Quantum Key Distribution Systems. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-319-98929-7_5
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