Light-matter entanglement over 50 km of optical fibre
arXiv:1901.06317 · doi:10.1038/s41534-019-0186-3
Abstract
When shared between remote locations, entanglement opens up fundamentally new capabilities for science and technology [1, 2]. Envisioned quantum networks distribute entanglement between their remote matter-based quantum nodes, in which it is stored, processed and used [1]. Pioneering experiments have shown how photons can distribute entanglement between single ions or single atoms a few ten meters apart [3, 4] and between two nitrogen-vacancy centres 1 km apart [5]. Here we report on the observation of entanglement between matter (a trapped ion) and light (a photon) over 50~km of optical fibre: a practical distance to start building large-scale quantum networks. Our methods include an efficient source of light-matter entanglement via cavity-QED techniques and a quantum photon converter to the 1550~nm telecom C band. Our methods provide a direct path to entangling remote registers of quantum-logic capable trapped-ion qubits [6 - 8], and the optical atomic clock transitions that they contain [9, 10], spaced by hundreds of kilometers.
arXiv comment9 pages, 5 figures
References in corpus (31)
- Entanglement of Formation of an Arbitrary State of Two Qubits
- The Quantum Internet
- Experimental loophole-free violation of a Bell inequality using entangled electron spins separated by 1.3 km
- Measurement-device-independent quantum key distribution
- An Elementary Quantum Network of Single Atoms in Optical Cavities
- A quantum network of clocks
- An Al quantum-logic clock with systematic uncertainty below
- Universal digital quantum simulation with trapped ions
- Quantum Repeaters with Photon Pair Sources and Multi-Mode Memories
- Quantum Teleportation Between Distant Matter Qubits
- Towards fault-tolerant quantum computing with trapped ions
- Bell inequality violation with two remote atomic qubits
- A quantum information processor with trapped ions
- Modular Entanglement of Atomic Qubits using both Photons and Phonons
- Single-qubit quantum memory exceeding -minute coherence time
- Tunable ion-photon entanglement in an optical cavity
- High-fidelity entanglement between a trapped ion and a telecom photon via quantum frequency conversion
- Fault-tolerant quantum error detection
- Absolute frequency measurement of the 40Ca+ S1/2 - D5/2 clock transition
- Photonic quantum state transfer between a cold atomic gas and a crystal
- Quantum Repeaters based on Single Trapped Ions
- Quantum frequency conversion to telecom of single photons from a nitrogen-vacancy center in diamond
- A Waveguide Frequency Converter Connecting Rubidium Based Quantum Memories to the Telecom C-Band
- Fully automated entanglement-based quantum cryptography system for telecom fiber networks
- Long-distance single photon transmission from a trapped ion via quantum frequency conversion
- Remote quantum clock synchronization without synchronized clocks
- Protocols and Techniques for a Scalable Atom--Photon Quantum Network
- Sympathetic cooling and detection of a hot trapped ion by a cold one
- Efficient polarisation-preserving frequency conversion from a trapped-ion-compatible wavelength to the telecom C band
- Neutral atom wavelength compatible 780 nm single photons from a trapped ion via quantum frequency conversion
- Quantum tomography as normalization of incompatible observations
Cited by in corpus (68)
- Quantum repeaters: From quantum networks to the quantum internet
- Quantum networks based on color centers in diamond
- Entangling single atoms over 33 km telecom fibre
- Entanglement of trapped-ion qubits separated by 230 meters
- Towards real-world quantum networks: a review
- Quantum Conference Key Agreement: A Review
- A multinode quantum network over a metropolitan area
- Long-distance distribution of atom-photon entanglement at telecom wavelength
- A telecom-wavelength quantum repeater node based on a trapped-ion processor
- Metropolitan-scale heralded entanglement of solid-state qubits
- Towards a deterministic interface between trapped-ion qubits and travelling photons
- Robust Quantum Memory in a Trapped-Ion Quantum Network Node
- Telecom networking with a diamond quantum memory
- Experimental demonstration of memory-enhanced scaling for entanglement connection of quantum repeater segments
- Diamond Integrated Quantum Photonics: A Review
- Entanglement between a telecom photon and an on-demand multimode solid-state quantum memory
- Entangling metropolitan-distance separated quantum memories
- Analysis of Multipartite Entanglement Distribution using a Central Quantum-Network Node
- Verifiable blind quantum computing with trapped ions and single photons
- Modeling of Measurement-based Quantum Network Coding on IBM Q Experience Devices
- Telecom-band quantum interference of frequency-converted photons from remote detuned NV centers
- Indistinguishable photons from a trapped-ion quantum network node
- Near-term performance of quantum repeaters with imperfect ensemble-based quantum memories
- Entanglement and non-locality between disparate solid-state quantum memories mediated by photons
- Requirements for a processing-node quantum repeater on a real-world fiber grid
- Microtoroidal resonators enhance long-distance dynamical entanglement generation in chiral quantum networks
- Detection of single ions in a nanoparticle coupled to a fiber cavity
- Ultra-low noise quantum memory for quasi-deterministic single photons generated by Rydberg collective atomic excitations
- Transmission of light-matter entanglement over a metropolitan network
- Entropy bounds for multiparty device-independent cryptography
- C-band single photons from a trapped ion via two-stage frequency conversion
- 'Sawfish' Photonic Crystal Cavity for Near-Unity Emitter-to-Fiber Interfacing in Quantum Network Applications
- Observation of a narrow inner-shell orbital transition in atomic erbium at 1299 nm
- Quantum Broadcast Channels with Cooperating Decoders: An Information-Theoretic Perspective on Quantum Repeaters
- Telecom Quantum Photonic Interface for a Ca Single-Ion Quantum Memory
- Optimisation of Scalable Ion-Cavity Interfaces for Quantum Photonic Networks
- Entanglement between a trapped ion qubit and a 780-nm photon via quantum frequency conversion
- Impacts of Noise and Structure on Quantum Information Encoded in a Quantum Memory
- Experimental realization of a 218-ion multi-qubit quantum memory
- Long-range-enhanced surface codes
- Nonlinear Domain Engineering for Quantum Technologies
- Difference-frequency generation in an AlGaAs Bragg-reflection waveguide using an on-chip electrically-pumped quantum dot laser
- On the Quantum Performance Evaluation of Two Distributed Quantum Architectures
- Ion-Photonic Frequency Qubit Correlations for Quantum Networks
- Improving entanglement generation rates in trapped ion quantum networks using nondestructive photon measurement and storage
- Hardware requirements for trapped-ion based verifiable blind quantum computing with a measurement-only client
- Entanglement of a pair of quantum emitters via continuous fluorescence measurements: a tutorial
- Quantum Computing for Location Determination
- Quantum spatial dynamics of high-gain parametric down-conversion accompanied by cascaded up-conversion
- Quantum Frequency Conversion of -long Photons from the Visible to the Telecom-C-Band
- Remote Quantum Networks based on Quantum Memories
- Diagrammatic technique for simulation of large-scale quantum repeater networks with dissipating quantum memories
- Uniting Quantum Processing Nodes of Cavity-coupled Ions with Rare-earth Quantum Repeaters Using Single-photon Pulse Shaping Based on Atomic Frequency Comb
- A new error-modeling of Hardy's paradox for superconducting qubits and its experimental verification
- Quantum Communication for Military Applications
- Pulsed multireservoir engineering for a trapped ion with applications to state synthesis and quantum Otto cycles
- An Integrated Bell-State Analyzer on a Thin Film Lithium Niobate Platform
- Directional search for light dark matter with quantum sensors
- The simulation of distributed quantum algorithms
- Calibration-Independent Certification of a Quantum Frequency Converter
- Scalable low-latency entanglement distribution for distributed quantum computing
- Mode multiplexing for scalable cavity-enhanced operations in neutral-atom arrays
- Efficient Quantum Frequency Conversion of Ultra-Violet Single Photons from a Trapped Ytterbium Ion
- Boosting end-to-end entanglement fidelity in quantum repeater networks via hybridized strategies
- Superior resilience of non-Gaussian entanglement against local Gaussian noises
- Kilometer-Scale Ion-Photon Entanglement with a Metastable Sr Qubit
- Doubly-ionized lanthanum as a qubit candidate for quantum networks
- Precise and extensive characterization of an optical resonator for cavity-based quantum networks