Entanglement Distribution over Ultra-Low-Loss Fiber with a Silicon Chip Source

Jinyi Du; Xingjian Zhang; Einly Lim; George F. R. Chen; Hongwei Gao; Dawn T. H. Tan; Alexander Ling

doi:10.1364/quantum.2025.qm3a.6

January 1, 2025

Entanglement Distribution over Ultra-Low-Loss Fiber with a Silicon Chip Source

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Key Points

The system achieved a high output of 460,000 entangled photon pairs per second.
Transmission over 155 km was accomplished with a 66 dB loss using ultra-low-loss fiber.
The silicon chip exhibited a fidelity of 97.90%, enabling effective entanglement distribution.
Extended transmission distances were achieved, showcasing the efficiency of this technology.

Implication

Demonstration shows 460,000 entangled photon pairs per second with 97.90% fidelity over fiber, indicating impressive transmission capabilities.

Abstract

We develop and demonstrate a silicon chip generating 460,000 entangled photon pairs per second with 97.90(3)% fidelity. The photons were transmitted over 155 km of deployed fiber (66 dB loss) and ultra-low-loss fiber spools (0.16 dB/km), achieving extended transmission distances.

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Cite This Study

Du et al. (2025) studied this question.

synapsesocial.com/papers/68c19f9c54b1d3bfb60db3a8 https://doi.org/10.1364/quantum.2025.qm3a.6

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Entanglement Distribution over Ultra-Low-Loss Fiber with a Silicon Chip Source

Key Points

Implication

Abstract

Discussion

Cite This Study

Entanglement Distribution over Ultra-Low-Loss Fiber with a Silicon Chip Source

Key Points

Implication

Abstract

Discussion

Cite This Study

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