A photonic transistor that can switch or amplify an optical signal with a single gate photon
requires strong non-linear interaction at the single-photon level. Circuit quantum
electrodynamics provides great flexibility to generate such an interaction, and thus could
serve as an effective platform to realize a high-performance single-photon transistor. Here
we demonstrate such a photonic transistor in the microwave regime. Our device consists of
two microwave cavities dispersively coupled to a superconducting qubit. A single gate …

Photon-photon interaction at the single-photon level enables the realization of a single-
photon transistor, in analogy to an electronic transistor, that can switch or amplify''source''
photons controlled by a single''gate''photon. Circuit quantum electrodynamics provides great
flexibility to generate such an interaction, and thus could serve as an effective platform to
realize a high performance single-photon transistor. In this presentation, we will present our
approach to the realization of such a photonic transistor in the microwave regime with circuit …