Catenaa, Monday, March 09, 2026- Researchers at Shanxi University in China have achieved a major advance in quantum communication by simultaneously teleporting up to five sideband qumodes in a continuous-variable system.
The breakthrough allows multiple quantum states to be transmitted in parallel, overcoming a longstanding limitation where only one state could be sent at a time.
The method relies on quantum entanglement and classical communication.
By carefully tuning the phases of two classical channels and selecting adjustable frequencies, the team achieved deterministic teleportation, enabling control over the number of qumodes transmitted in a single run.
The outputs reached fidelities of around 70%, surpassing the non-cloning limit that separates genuine quantum teleportation from classical replication.
Teleporting multiple sideband qumodes in parallel has significant implications for high-capacity quantum networks. Traditional setups required separate teleportation circuits for each channel, limiting throughput.
The Shanxi team’s approach allows more information to be transmitted over the same physical system, offering a scalable path for future entanglement-based communication links.
Xiaolong Su, who led the research, said the phase-tuning mechanism provides flexibility in teleportation, letting operators adjust how many qumodes are teleported per session.
The results, published in Science Bulletin on December 30, 2025, represent a practical step toward multi-channel quantum communication capable of supporting more robust and efficient entanglement networks.
