Quantum teleportation with independent sources over an optical fibre network

Abstract

Quantum teleportation faithfully transfers a quantum state between distant nodes in a network, enabling revolutionary information processing applications. Here we report teleporting quantum states over a 30 km optical fiber network with the input single photon state and the EPR state prepared independently. By buffering photons in 10 km coiled optical fiber, we perform Bell state measurement after entanglement distribution. With active feed-forward operation, the average quantum state fidelity and quantum process fidelity are measured to be 0.85 and 0.77, exceeding classical limits of 0.67 and 0.5, respectively. The statistical hypothesis test shows that the probability of a classical process to predict an average state fidelity no less than the one observed in our experiment is less than 2.4E-14, confirming the quantum nature of our quantum teleportation experiment. Our experiment marks a critical step towards the realization of quantum internet in the future.

11 pages, 3 figures

References in corpus (10)

• The Quantum Internet
• Experimental quantum teleportation
• Quantum teleportation between light and matter
• Quantum teleportation using active feed-forward between two Canary Islands
• Unconditional quantum teleportation between distant solid-state qubits
• Quantum teleportation and entanglement distribution over 100-kilometre free-space channels
• Entangling Independent Photons by Time Measurement
• Quantum teleportation from a telecom-wavelength photon to a solid-state quantum memory
• Experimental Quantum Teleportation of a Two-Qubit Composite System
• Experimental interference of independent photons

Cited by in corpus (2)

• Quantum teleportation across a metropolitan fibre network
• NbN superconducting nanowire single photon detector with efficiency over 90% at 1550 nm wavelength operational at compact cryocooler temperature