Integrated silicon-carbide chip generates telecom photon-memory entanglement for quantum networks

[Submitted on 1 Jul 2026]

1d ago· 2 min readenNews

Summary

Researchers demonstrate an integrated photonic architecture for generating entanglement between telecom photons and quantum memories using dual silicon-carbide microring resonators on a single chip. One resonator acts as an entangled photon-pair source, while the other functions as a cavity-enhanced quantum memory. The system achieves 88.1% single-pair interference visibility and demonstrates high-dimensional qudit entanglement across up to 63 temporal modes, with a peak on-chip entanglement rate of 5.6 kEbits/s. This represents the first integrated platform for photon-memory entanglement generation, offering a scalable path toward chip-scale quantum repeaters and quantum networks.

Source

bskyIntegrated silicon-carbide chip generates telecom photon-memory entanglement for quantum networksarxiv.org

Key quotes

· 5 pulled

Here we demonstrate an integrated photonic architecture for telecom photon-memory entanglement generation based on dual silicon-carbide microring resonators.

The memory resonator achieves an ensemble cooperativity of 1.9 and is intrinsically spectrally matched to the photon source, enabling storage of entangled telecom photons without spectral modification.

We generate and verify photon-memory entanglement with a single-pair interference visibility of 88.1 ± 10.6%.

By exploiting the multimode capacity of the memory, we demonstrate high-dimensional photon-memory qudit entanglement spanning up to 63 temporal modes.

These results establish the first integrated platform for photon-memory entanglement generation and provide a scalable route toward chip-scale quantum repeaters and memory-enabled quantum networks operating over telecommunications infrastructure.

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Scalable quantum networks require the efficient generation, storage, and synchronization of entanglement between photonic qubits and quantum memories. Quantum repeater architectures based on absorptive rare-earth-ion photonic memories offer a promising ro

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