A robust and flexible high-order photon blocking effect based on drive ratio analysis

Non-classical light sources are often used in quantum cryptography and other fields. To obtain adjustable, high-performance non-classical light sources, we need to find a suitable quantum system, to which non-traditional photon blocking effect is a good method. Among them, the correlation function and the mean number of photons are important tools to explore the performance of non-classical light sources. At present, although a large number of studies have been made to use the non-traditional photon blocking effect to produce non-classical light sources, most of the studies discussed how to produce good single-photon sources, rarely studies consider adjusting the brightness and the types of it. Based on the above considerations, this paper proposes a method to construct an adjustable high-order photon blocking phenomenon. We employed the two field to drive the atom and the cavity simultaneously and define the ratio of the atomic drive strength to the cavity drive strength as the drive ratio. By adjusting the drive ratio, the types and the mean photon number of non-classical light sources can be tuned constantly from single photon blocking to high-order photon blocking effect. These findings can provide a new way for the future production of adjustable non-classical light sources.