Quantum Repeater with Encoding

Understand

We propose a new approach to implement quantum repeaters for long distance quantum communication.

• Our protocol generates a backbone of encoded Bell pairs and uses the procedure of classical error correction during simultaneous entanglement connection.
• We illustrate that the repeater protocol with simple Calderbank-Shor-Steane (CSS) encoding can significantly extend the communication distance, while still maintaining a fast key generation rate.