Aggregating quantum repeaters for the quantum internet

Abstract

The quantum internet holds promise for performing quantum communication, such as quantum teleportation and quantum key distribution, freely between any parties all over the globe. For such a quantum internet protocol, a general fundamental upper bound on the performance has been derived [K. Azuma, A. Mizutani, and H.-K. Lo, arXiv:1601.02933]. Here we consider its converse problem. In particular, we present a protocol constructible from any given quantum network, which is based on running quantum repeater schemes in parallel over the network. The performance of this protocol and the upper bound restrict the quantum capacity and the private capacity over the network from both sides. The optimality of the protocol is related to fundamental problems such as additivity questions for quantum channels and questions on the existence of a gap between quantum and private capacities.

5 pages, 2 figures

References in corpus (5)

• The Quantum Internet
• Quantum Computing
• Quantum Communication With Zero-Capacity Channels
• A No-Go Theorem for Gaussian Quantum Error Correction
• Relative Entropy Bounds on Quantum, Private and Repeater Capacities

Cited by in corpus (27)

• Advances in Quantum Cryptography
• Quantum repeaters: From quantum networks to the quantum internet
• End-to-end capacities of a quantum communication network
• Advances in Space Quantum Communications
• Entanglement Distribution in a Quantum Network, a Multi-Commodity Flow-Based Approach
• Modular architectures for quantum networks
• Shortcuts to quantum network routing
• Tools for quantum network design
• Universal Limitations on Quantum Key Distribution over a Network
• Practical figures of merit and thresholds for entanglement distribution in quantum networks
• Statistical properties of the quantum internet
• Fundamental limitation on quantum broadcast networks
• Photonic graph state generation from quantum dots and color centers for quantum communications
• Multipartite state generation in quantum networks with optimal scaling
• Policies for elementary links in a quantum network
• Versatile relative entropy bounds for quantum networks
• Linear programs for entanglement and key distribution in the quantum internet
• Fast and reliable entanglement distribution with quantum repeaters: principles for improving protocols using reinforcement learning
• Deterministic generation of entangled photonic cluster states from quantum dot molecules
• On the design and analysis of near-term quantum network protocols using Markov decision processes
• Aggregating Quantum Networks
• On the Bipartite Entanglement Capacity of Quantum Networks
• Quantum repeater protocol using an arrangement of QED-optomechanical hybrid systems
• Coherent driving of direct and indirect excitons in a quantum dot molecule
• Do black holes store negative entropy?
• Optimal supplier of single-error-type entanglement via coherent-state transmission
• Quantum Max-Flow Min-Cut theorem