Controllable deterministic quantum teleportation of multiple sideband qumodes

As an important quantum communication protocol, quantum teleportation has broad applications in quantum information science and technology. For the application, it is essential to enhance the ability of quantum teleportation by teleporting multiple quantum states simultaneously. Here, we experimentally demonstrate deterministic quantum teleportation of multiple sideband qumodes of coherent states, which corresponds to teleporting multiple quantum states simultaneously, with the assistance of continuous-variable (CV) quantum entanglement. By fine-tuning the phases of two classical channels according to different adjustable frequencies, we successfully realize deterministic CV quantum teleportation with up to 5 sideband qumodes simultaneously within the frequency bandwidth of 24 MHz. We show that the number of teleported multiple qumodes is controllable by changing the phases of two classical channels. The obtained fidelities of output multiple qumodes are around 70%, which are all beyond the non-cloning limit. The results present a novel method for quantum teleportation of multiple quantum states simultaneously and take a crucial step in enhancing the teleporting ability of quantum teleportation.