A universal, plug-and-play synchronisation scheme for practical quantum networks
arXiv:2007.02256 · doi:10.1038/s41534-020-0245-9
Abstract
We propose and experimentally demonstrate a plug-and-play, practical, and enabling method allowing to synchronize the building blocks of a quantum network in an all-optical way. Our scheme relies on mature and reliable classical telecommunication and non-linear optical technologies and can be implemented in a universal way with off-the-shelf components. Compared to already reported solutions, it allows achieving high-quality synchronization compatible with high network-operation rate and is free from opto-electronic jitters affecting servo-loop based configurations. We test our scheme with a genuine quantum optical method in terms of the interference between two photons coming from two remotely synchronized sources spaced by distances of up to 100 km. Measured visibilities well above 90% confirm the validity of our approach. Due its simplicity and high-quality performance, our scheme paves the way for the synchronization of long-distance quantum networks based on fibre, free-space, as well as hybrid solutions.
References in corpus (22)
- The Quantum Internet
- A clock network for geodesy and fundamental science
- Towards a global quantum network
- Entangling Independent Photons by Time Measurement
- Storage and retrieval of vector beams of light in a multiple-degree-of-freedom quantum memory
- Quantum teleportation across a metropolitan fibre network
- Quantum storage of entangled telecom-wavelength photons in an erbium-doped optical fibre
- High performance fiber-coupled NbTiN superconducting nanowire single photon detectors with Gifford-McMahon cryocooler
- Quantum photonics at telecom wavelengths based on lithium niobate waveguides
- Photonic quantum state transfer between a cold atomic gas and a crystal
- Near-term quantum-repeater experiments with nitrogen-vacancy centers: Overcoming the limitations of direct transmission
- Phase noise measurements in long fiber interferometers for quantum repeaters applications
- High-fidelity entanglement swapping with fully independent sources
- Entanglement distribution over 150 km in wavelength division multiplexed channels for quantum cryptography
- Highly efficient entanglement swapping and teleportation at telecom wavelength
- Microwave photon-mediated interactions between semiconductor qubits
- High coherence photon pair source for quantum communication
- High-visibilty two-photon interference at a telecom wavelength using picosecond regime separated sources
- Experimental Synchronization of Independent Entangled Photon Sources
- High-quality polarization entanglement state preparation and manipulation in standard telecommunication channels
- Quantum optical frequency up-conversion for polarisation entangled qubits: towards interconnected quantum information devices
- Towards continuous-wave regime teleportation for light matter quantum relay stations
Cited by in corpus (6)
- Fast and simple qubit-based synchronization for quantum key distribution
- Satellite-based Quantum Information Networks: Use cases, Architecture, and Roadmap
- Ultra-fast Hong-Ou-Mandel interferometry via temporal filtering
- Configurable heralded two-photon Fock-states on a chip
- Continuous-wave all-optical single-photon transistor based on a Rydberg-atom ensemble
- Qubit-based clock synchronization for QKD systems using a Bayesian approach