Deterministic microwave-optical transduction based on quantum teleportation

TL;DR

This paper introduces a quantum teleportation-based scheme for microwave-optical transduction, offering high efficiency and low noise, which could enable practical long-distance quantum communication between superconducting processors.

Contribution

It proposes a novel teleportation-based transduction method that requires lower cooperativity and device complexity compared to traditional direct conversion schemes.

Findings

Maintains high rate advantage across all cooperativity values.

Achieves higher fidelity and success probability for complex quantum states.

Reduces device requirements for microwave-optical quantum transduction.

Abstract

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.