An elementary quantum network of single atoms in optical cavities

  title={An elementary quantum network of single atoms in optical cavities},
  author={Stephan Ritter and Christian N{\"o}lleke and Carolin Hahn and Andreas Reiserer and Andreas Neuzner and Manuel Uphoff and Martin M{\"u}cke and Eden Figueroa and J{\"o}rg Bochmann and Gerhard Rempe},
Quantum networks are distributed quantum many-body systems with tailored topology and controlled information exchange. They are the backbone of distributed quantum computing architectures and quantum communication. Here we present a prototype of such a quantum network based on single atoms embedded in optical cavities. We show that atom–cavity systems form universal nodes capable of sending, receiving, storing and releasing photonic quantum information. Quantum connectivity between nodes is… Expand
Quantum network with individual atoms and photons
Quantum physics allows a new approach to information processing. A grand challenge is the realization of a quantum network for long-distance quantum communication and large-scale quantum simulation.Expand
Quantum networks based on single atoms in optical cavities
  • S. Ritter, C. Nolleke, +7 authors G. Rempe
  • Physics
  • 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC
  • 2013
The distribution of quantum information as well as the utilization of non-locality are at the heart of quantum networks, which show great promise for future applications like quantum communication,Expand
Deterministic quantum network for distributed entanglement and quantum computation
We propose a simple architecture for a scalable quantum network, in which the quantum nodes consist of qubit systems confined in cavities. The nodes are deterministically coupled by transmission andExpand
Investigation of efficient spin-photon interfaces for the realisation of quantum networks
Quantum networks lie at the heart of distributed quantum computing and secure quantum communication research areas that have seen a strong increase of interest over the last decade. Their basicExpand
Spin-photon module for scalable network architecture in quantum dots
A module consisting of spin singlet-triplet qubits and single microwave photons, which has met the threshold of particular designed error-correction protocols, provides a feasible approach towards scalable quantum network architecture. Expand
Towards quantum networks of single spins: analysis of a quantum memory with an optical interface in diamond.
This work presents a theoretical framework to describe the dephasing of the nuclear spins under repeated generation of NV spin-photon entanglement and shows that quantum states can be stored during hundreds of repetitions using typical experimental coupling parameters. Expand
Diamond-based Fabry-Perot microcavities for quantum networks
A quantumnetwork would allow the distribution of a quantum state over many spatially separated quantum nodes which individually possess the ability to generate, process and store quantum information.Expand
Photon-Mediated Quantum Gate between Two Neutral Atoms in an Optical Cavity
Quantum logic gates are fundamental building blocks of quantum computers. Their integration into quantum networks requires strong qubit coupling to network channels, as can be realized with neutralExpand
Remote entanglement for quantum networks
Abstract Quantum networks are distributed many-body quantum systems with tailored topology and controlled information exchange. We present two schemes to generate remote entanglement, in atomicExpand
Deterministic quantum state transfer and remote entanglement using microwave photons
Deterministic quantum state transfer and entanglement generation is demonstrated between superconducting qubits on distant chips using single photons and has the potential to be used for quantum computing distributed across different nodes of a cryogenic network. Expand


A single-atom quantum memory
The most fundamental implementation of such a quantum memory is demonstrated, by mapping arbitrary polarization states of light into and out of a single atom trapped inside an optical cavity, which makes the system a versatile quantum node with excellent prospects for applications in optical quantum gates and quantum repeaters. Expand
Entanglement of spin waves among four quantum memories
Measurement-induced entanglement stored in four atomic memories; user-controlled, coherent transfer of the atomicEntanglement to four photonic channels; and characterization of the full quadripartite entangler using quantum uncertainty relations are demonstrated. Expand
Single-Atom Single-Photon Quantum Interface
This work reports on the realization of an atom-photon quantum interface based on an optical cavity, using it to entangle a single atom with a single photon and then to map the quantum state of the atom onto a second single photon. Expand
Entanglement of single-atom quantum bits at a distance
The entanglement of two fixed single-atom quantum memories separated by one metre is demonstrated by directly measuring qubit correlations with near-perfect detection efficiency, and is still in principle useful for subsequent quantum operations and scalable quantum information applications. Expand
Quantum State Transfer and Entanglement Distribution among Distant Nodes in a Quantum Network
We propose a scheme to utilize photons for ideal quantum transmission between atoms located at spatially separated nodes of a quantum network. The transmission protocol employs special laser pulsesExpand
Quantum repeaters based on atomic ensembles and linear optics
The theoretical and experimental status quo of this very active field of quantum repeater protocols is reviewed, and the potentials of different approaches are compared quantitatively, with a focus on the most immediate goal of outperforming the direct transmission of photons. Expand
The quantum internet
This work states that quantum interconnects, which convert quantum states from one physical system to those of another in a reversible manner, can be achieved by the optical interactions of single photons and atoms, allowing the distribution of entanglement across the network and the teleportation of quantum states between nodes. Expand
Functional Quantum Nodes for Entanglement Distribution over Scalable Quantum Networks
The demonstrated quantum nodes and channels can be used as segments of a quantum repeater, providing an essential tool for robust long-distance quantum communication. Expand
Optical quantum memory
Quantum memory is essential for the development of many devices in quantum information processing, including a synchronization tool that matches various processes within a quantum computer, anExpand
Entanglement percolation in quantum networks
Quantum networks are composed of nodes that can send and receive quantum states by exchanging photons1. Their goal is to facilitate quantum communication between any nodes, something that can be usedExpand