On-demand Microwave Controlled Single-photon Source

The microwave single-photon source plays a fundamental role in quantum information processing regime. In this paper, we demonstrate a theoretical model of the controlled single-photon source. The source is consisted of a transmon qubit, a control line and an output line. The source be drived by a short microwave pulse applied through the control line, single photon is emitted through the output line. Based on theoretical calculation and numerical simulation, we obtain the single-photon source, where the photon number and shape can be controlled. This is important to enhance the efficiency of quantum communication.