  The coherent transduction between microwave and optical frequencies is
critical to interconnect superconducting quantum processors over long
distances. However, it is challenging to establish such a quantum interface
with high efficiency and small added noise based on the standard direct
conversion scheme. Here, we propose a transduction scheme based on
continuous-variable quantum teleportation. Reliable quantum information
transmission can be realized with an arbitrarily small cooperativity, in
contrast to the direct conversion scheme which requires a large minimum
cooperativity. We show that the teleportation-based scheme maintains a
significant rate advantage robustly for all values of cooperativity. We further
investigate the performance in the transduction of complex quantum states such
as cat states and Gottesman-Kitaev-Preskill(GKP) states and show that a higher
fidelity or success probability can be achieved with the teleportation-based
scheme. Our scheme significantly reduces the device requirement, and makes
quantum transduction between microwave and optical frequencies feasible in the
near future.
