Entanglement Generation During Distribution via Spatial Superposition Entanglement Generation

2026-05-04

AI Summary

This work challenges the conventional view that quantum noise invariably hinders entanglement distribution in quantum communication. By exploiting an interferometric setup that coherently superposes spatial paths, the authors demonstrate for the first time that quantum noise can be repurposed as a resource to deterministically generate both bipartite and multipartite entanglement from initially separable states as they traverse noisy channels. The protocol intrinsically produces entanglement during the distribution process itself, thereby establishing a novel, experimentally feasible paradigm for distributed entanglement engineering. This approach offers an innovative pathway toward practical quantum communication networks by turning a traditional obstacle—noise—into a functional asset.

Abstract

The exploitation of quantum coherence at the level of propagation represents a powerful paradigm for quantum communication networks. In this work, we show that the coherent superposition of spatially distinct communication links enables entanglement generation inherently during distribution. Specifically, separable quantum states can be deterministically transformed into entangled states, when the noisy communication links they traverse are coherently superposed. Contrary to the conventional view of noise as a detrimental effect, we demonstrate that quantum noise itself can be transformed into a constructive resource for entanglement generation for both bipartite and multipartite entanglement. Given the practical feasibility of implementing spatial superposition in interferometric setups, our approach provides a feasible method for distributed entanglement engineering, opening new directions for quantum communication and networked quantum technologies.

Problem

• entanglement generation
• spatial superposition
• quantum noise
• quantum communication
• coherent superposition

Innovation

• spatial superposition
• entanglement generation
• quantum noise as resource
• coherent communication links
• distributed entanglement engineering