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arXiv · 2411.19307

Tunable quantum router with giant atoms, implementing quantum gates, teleportation, non-reciprocity, and circulators

Rui-Yang Gong·Zi-Yu He·Cheng-He Yu·Ge-Fei Zhang·Franco Nori·Ze-Liang Xiang
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Abstract

The unique photon-scattering phenomena of giant-atom systems offer a novel paradigm for exploring innovative quantum optics phenomena and applications. Here, we investigate a giant-atom configuration embedded in a dual-rail waveguide, whose scattering behavior is analytically derived based on a four-port model and affected by both waveguide-induced and interatomic interaction phases. One can modulate these phases to achieve targeted routing and non-reciprocal scattering of photons. Furthermore, using such a configuration, we propose quantum applications such as quantum storage, path-encoded quantum gates (e.g., CNOT gate), quantum teleportation, and quantum circulators. This configuration can be implemented with state-of-the-art solid-state quantum systems, enabling a wide range of quantum applications and facilitating the development of quantum networks.

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Rui-Yang Gong, Zi-Yu He, Cheng-He Yu, Ge-Fei Zhang, Franco Nori, Ze-Liang Xiang. 2024-11-28. Tunable quantum router with giant atoms, implementing quantum gates, teleportation, non-reciprocity, and circulators. https://arxiv.org/abs/2411.19307

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