Quantum teleportation across a metropolitan fibre network
By Raju Valivarthi, M. G. Puigibert, Qiang Zhou, G. H. Aguilar, V. Verma, F. Marsili, M. Shaw, Sae Woo Nam, D. Oblak, Wolfgang Tittel. Nature Photonics, 2016
296 citations recorded by the source corpus.
The first field test of quantum teleportation is implemented across a metropolitan fibre network with independent quantum light sources. To establish a robust quantum teleportation system in the real world, several feedback mechanisms are developed. If a photon interacts with a member of an entangled photon pair via a Bell-state measurement (BSM), its state is teleported over principally arbitrary distances onto the pair's second member1. Since 1997, this puzzling prediction of quantum mechanics has been demonstrated many times2. However, with two exceptions3,4, only the photon that received the teleported state, if any, travelled far, while the photons partaking in the BSM were always measured close to where they were created. Here, using the Calgary fibre network, we report quantum teleportation from a telecom photon at 1,532 nm wavelength, interacting with another telecom photon after both have travelled several kilometres and over a combined beeline distance of 8.2 km, onto a photon at 795 nm wavelength. This improves the distance over which teleportation takes place to 6.2 km. Our demonstration establishes an important requirement for quantum repeater-based communications5 and constitutes a milestone towards a global quantum internet6.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/9da9cf21dbc4ec66ebac8174ac8a9cf6256eb24d
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Artificial Intelligence
In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Superconducting nanowire single-photon detectors for quantum information (2020, background): “[182] Valivarthi R, Puigibert M l G, Zhou Q, et al.”
- A link layer protocol for quantum networks (2019, background): “quantum dots [32], rare earth ion-doped crystals [84], atomic gases [25, 50], and superconducting qubits [65]), but their performance is not yet”