Integrating Entanglement Purification into All-Photonic Quantum Repeaters
arXiv:2504.18121 · doi:10.1109/QCE65121.2025.00100
Abstract
We propose a purification-enhanced all-photonic quantum repeater scheme based on repeater graph states (RGS) framework that leverages the recently proposed half-RGS building block. This framework addresses a longstanding open question--how to naturally integrate entanglement purification with an all-photonic scheme--by enabling long-distance purification without disrupting the core design. Our framework utilizes optimistic purification performed directly on the half-RGS primitives across long distances without waiting for heralding outcomes. The overhead is modest: the RGS generation slows down proportionally with the number of purification rounds, and each round requires only one additional quantum emitter per half-RGS source. However, since the generation time is negligible compared to the end-to-end communication delay, the total latency remains effectively dominated by communication time, similar to frameworks without purification. Our framework enables flexible purification scheduling along the connection path, making it compatible with memory-based strategies, a rich body of research on purification scheduling and optimization that was previously thought inapplicable to the RGS scheme. Through numerical evaluation, we compare the performance of our framework with purification between memories at end nodes.
arXiv comment11 pages, 6 figures, comments welcome!
References in corpus (44)
- Quantum sensing
- Advances in Quantum Metrology
- Purification of Noisy Entanglement and Faithful Teleportation via Noisy Channels
- Quantum Teleportation is a Universal Computational Primitive
- Secure quantum key distribution with realistic devices
- Fundamental Limits of Repeaterless Quantum Communications
- General Benchmarks for Quantum Repeaters
- Quantum privacy amplification and the security of quantum cryptography over noisy channels
- Suppressing quantum errors by scaling a surface code logical qubit
- Logical quantum processor based on reconfigurable atom arrays
- Quantum repeaters based on entanglement purification
- Quantum error correction below the surface code threshold
- Distributed Quantum Computation over Noisy Channels
- All photonic quantum repeaters
- Quantum repeaters: From quantum networks to the quantum internet
- Efficient long distance quantum communication
- Universal blind quantum computation
- Fundamental rate-loss tradeoff for optical quantum key distribution
- Substituting Quantum Entanglement for Communication
- Entanglement purification and quantum error correction
- Unconditionally verifiable blind computation
- NetSquid, a NETwork Simulator for QUantum Information using Discrete events
- Distributed Quantum Metrology and the Entangling Power of Linear Networks
- Multiparticle entanglement purification for graph states
- Loss tolerance in one-way quantum computation via counterfactual error correction
- Quantum repeaters with imperfect memories: cost and scalability
- SeQUeNCe: A Customizable Discrete-Event Simulator of Quantum Networks
- Measurement-based quantum repeaters
- Deterministic generation of all-photonic quantum repeaters from solid-state emitters
- Review of Distributed Quantum Computing. From single QPU to High Performance Quantum Computing
- Optimized Entanglement Purification
- On the role of memory errors in quantum repeaters
- Entanglement purification protocols for all graph states
- Resource requirements for efficient quantum communication using all-photonic graph states generated from a few matter qubits
- Photonic resource state generation from a minimal number of quantum emitters
- Constant-Overhead Fault-Tolerant Bell-Pair Distillation using High-Rate Codes
- Generalized Quantum Repeater Graph States
- Reducing classical communication costs in multiplexed quantum repeaters using hardware-aware quasi-local policies
- Stabilizer Entanglement Distillation and Efficient Fault-Tolerant Encoders
- Engineering Challenges in All-photonic Quantum Repeaters
- Optimization of deterministic photonic graph state generation via local operations
- Architecture and protocols for all-photonic quantum repeaters
- Disti-Mator: an entanglement distillation-based state estimator
- Boosting end-to-end entanglement fidelity in quantum repeater networks via hybridized strategies