title: On-demand single-photon sources via quantum blockade and applications in decoy-state quantum key distribution.
abstract: Quantum blockades as a nonlinear quantum optical process have been well studied in recent years. Using the quantum trajectory method, we calculate and discuss the output photon number distributions of a single-photon blockade process in a Kerr nonlinear dissipative resonator, revealing that the probability of the single-photon state can be optimized. Then we show through numerical simulations that such a quasi-single-photon source can drastically raise the key rate in the decoy-state quantum key distribution.
authors.forename: Ao
authors.initials: A
authors.lastname: Li
authors.forename: Tian
authors.initials: T
authors.lastname: Chen
authors.forename: Yiheng
authors.initials: Y
authors.lastname: Zhou
authors.forename: Xiangbin
authors.initials: X
authors.lastname: Wang