Entanglement Superactivation in Multiphoton Distillation Networks
arXiv:2510.26290 · doi:10.1103/zkd3-4gmx
Abstract
In quantum networks, after passing through noisy channels or information processing, residual states may lack sufficient entanglement for further tasks, yet they may retain hidden quantum resources that can be recycled. Efficiently recycling these states to extract entanglement resources such as genuine multipartite entanglement or Einstein-Podolsky-Rosen pairs is essential for optimizing network performance. Here, we develop a tripartite entanglement distillation scheme using an eight-photon quantum platform, demonstrating entanglement superactivation phenomena which are unique to multipartite systems. We successfully generate a three-photon genuinely entangled state from two bi-separable states via local operations and classical communication, demonstrating superactivation of genuine multipartite entanglement. Furthermore, we extend our scheme to generate a three-photon state capable of extracting an Einstein-Podolsky-Rosen pair from two initial states lacking this capability, revealing a previously unobserved entanglement superactivation phenomenon. Our methods and findings offer not only practical applications for quantum networks, but also lead to a deeper understanding of multipartite entanglement structures.
23 pages, 10 figures. A previous version of this manuscript was made publicly available via the Research Square platform under the URL: https://assets-eu.researchsquare.com/files/rs-3828402/v1_covered_578311cc-7b26-4ccb-87b6-c01421c44e0f.pdf. This arXiv submission constitutes the latest version
References in corpus (38)
- Quantum cryptography: Public key distribution and coin tossing
- Introducing Quantum Discord
- Three qubits can be entangled in two inequivalent ways
- Entanglement detection
- Multi-photon entanglement and interferometry
- Feasible Entanglement Purification for Quantum Communication
- Experimental Four-photon Entanglement and High-fidelity Teleportation
- Experimental ten-photon entanglement
- Experimental Demonstration of Blind Quantum Computing
- Entanglement versus Correlations in Spin Systems
- Everything You Always Wanted to Know About LOCC (But Were Afraid to Ask)
- Entanglement Distillation between Solid-State Quantum Network Nodes
- Towards a global quantum network
- Taming multiparticle entanglement
- Measure of genuine multipartite entanglement with computable lower bounds
- Scalable integrated single-photon source
- Long-distance entanglement purification for quantum communication
- Localizable Entanglement
- Multiparticle entanglement purification for graph states
- Experimental quantum repeater without quantum memory
- Genuinely Multipartite Concurrence of N-qubit X-matrices
- Super-activation of quantum non-locality
- Experimental Single-Copy Entanglement Distillation
- Entangling microwaves with optical light
- Entanglement purification protocols for all graph states
- Genuine multiparticle entanglement of permutationally invariant states
- Entanglement purification and protection in a superconducting quantum network
- Purification of genuine multipartite entanglement
- Activation of genuine multipartite entanglement: Beyond the single-copy paradigm of entanglement characterisation
- Distillation of multipartite entanglement by complementary stabilizer measurements
- Purification of Single-photon Entanglement
- Entanglement Concentration Using Quantum Statistics
- Super-Activation of Quantum Steering
- Multiparticle entanglement as an emergent phenomenon
- Fundamental Limitation on the Detectability of Entanglement
- The positive partial transpose conjecture for n=3
- Certifying Quantum Separability with Adaptive Polytopes
- Entanglement Purification of Hypergraph States