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arXiv · 2512.08429

Real-time heralded non-Gaussian teleportation resource-state generator

Joseph C. Chapman·Yanbao Zhang·Joseph M. Lukens·Alberto M. Marino·Eugene Dumitrescu·Yan Wang·Nicholas A. Peters
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Abstract

Quantum teleportation is a fundamental quantum communications primitive that requires an entangled resource state. In the continuous-variable regime, non-Gaussian entangled resources have been shown theoretically to improve teleportation fidelity compared to Gaussian squeezed vacuum. We experimentally demonstrate a heralded two-mode resource state for non-Gaussian teleportation capable of real-time use. We characterize this state with two-mode homodyne tomography showing it has fidelity $F=0.973\pm 0.005$ with the expected resource state. Real-time use is enabled by a photon-subtraction orchestrator system performing live coincidence detection and outputting low-jitter and low-latency heralding signals. Live collection of real-time quadrature measurements of photon-subtracted states is enabled by the development of a synchronized homodyne detection server, where the orchestrator system queries the server to collect the real-time quadrature samples corresponding to the heralded state. These results demonstrate significant advancement in enabling the use of heralded non-Gaussian states in quantum networking protocols, especially in the context of quantum repeaters, non-Gaussian quantum sensing, and measurement-based quantum computing.

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Joseph C. Chapman, Yanbao Zhang, Joseph M. Lukens, Alberto M. Marino, Eugene Dumitrescu, Yan Wang, Nicholas A. Peters. 2025-12-09. Real-time heralded non-Gaussian teleportation resource-state generator. https://arxiv.org/abs/2512.08429

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