Temporal fusion of entangled resource states from a quantum emitter

Fusion-based photonic quantum computing architectures rely on two primitives: i) near-deterministic generation and control of constant-size entangled states and ii) probabilistic entangling measurements (photonic fusion gates) between entangled states. Here, we demonstrate these key functionalities by temporally fusing resource states deterministically generated using a solid-state spin-photon interface. Repetitive operation of the source leads to sequential entanglement generation, whereby curiously entanglement is created between the quantum states of the same spin at two different instances in time. Such temporal multiplexing of photonic entanglement provides a resource-efficient route to scaling many-body entangled systems with photons.

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Publication Details

Journal
Nature Communications
Published
2025-08-15
DOI
https://doi.org/10.1038/s41467-025-62130-0
Citations
3
Primary Topic
Quantum Mechanics and Applications
Type
article
Field-Weighted Citation Impact
3.74

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article

Temporal fusion of entangled resource states from a quantum emitter

Carlos Faurby, Arne Ludwig, Andreas Dirk Wieck, Anders S. Sørensen et al.
3 citations
Nature Communications
Quantum Mechanics and Applications
3.74
article

Temporal fusion of entangled resource states from a quantum emitter

Carlos Faurby, Arne Ludwig, Andreas Dirk Wieck, Anders S. Sørensen, Yijian Meng, Nikolai Bart, Patrik I. Sund, Peter Lodahl, Leonardo Midolo, Ming Lai Chan, Stefano Paesani, Zhe Liu, Ying Wang, Rasmus B. Nielsen
article en
3 citations

Abstract

Fusion-based photonic quantum computing architectures rely on two primitives: i) near-deterministic generation and control of constant-size entangled states and ii) probabilistic entangling measurements (photonic fusion gates) between entangled states. Here, we demonstrate these key functionalities by temporally fusing resource states deterministically generated using a solid-state spin-photon interface. Repetitive operation of the source leads to sequential entanglement generation, whereby curiously entanglement is created between the quantum states of the same spin at two different instances in time. Such temporal multiplexing of photonic entanglement provides a resource-efficient route to scaling many-body entangled systems with photons.

Nature CommunicationsVol. 16(1)
University of Copenhagen (DK), Steno Diabetes Centers (DK), Copenhagen Institute of Interaction Design (DK), Ruhr University Bochum (DE)
Villum Fonden, European Commission, National Research Foundation, Danmarks Grundforskningsfond, Novo Nordisk, Novo Nordisk Fonden
Openalex Percentile: Top 7%
Quantum Mechanics and Applications
3.74
DOIOpen Access PDFOpenAlex
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Temporal fusion of entangled resource states from a quantum emitter — Carlos Faurby, Arne Ludwig, et al. · Nature Communications (2025) | TGRS Research Map | TGRS