Deterministic Generation of Loss-Tolerant Photonic Cluster States with a Single Quantum Emitter

TL;DR

This paper presents a deterministic protocol for generating large, loss-tolerant photonic tree cluster states using a single quantum emitter, advancing quantum error correction capabilities.

Contribution

It introduces a novel, resource-efficient method to produce arbitrary-sized photonic tree states via emission and re-scattering from one emitter.

Findings

Protocol enables deterministic generation of large tree states

Uses only a single quantum emitter for entanglement

Can be extended to other tree-type entangled states

Abstract

A photonic cluster state with a tree-type entanglement structure constitutes an efficient resource for quantum error correction of photon loss. But the generation of a tree cluster state with an arbitrary size is notoriously difficult. Here, we propose a protocol to deterministically generate photonic tree states of arbitrary size by using only a single quantum emitter. Photonic entanglement is established through both emission and re-scattering from the same emitter, enabling fast and resource-efficient entanglement generation. The same protocol can also be extended to generate more general tree-type entangled states.