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

• URL: http://arxiv.org/abs/2411.19307v1
• Date: Thu, 28 Nov 2024 18:29:22 GMT
• Title: Tunable quantum router with giant atoms, implementing quantum gates, teleportation, non-reciprocity, and circulators
• Authors: Rui-Yang Gong, Zi-Yu He, Cheng-He Yu, Ge-Fei Zhang, Franco Nori, Ze-Liang Xiang,
• Abstract summary: Giant-atom systems offer a novel paradigm for exploring innovative quantum optics phenomena and applications. We investigate a giant-atom configuration embedded in a dual-rail waveguide, whose scattering behavior is analytically derived based on a four-port model. We propose quantum applications such as quantum storage, path-encoded quantum gates, quantum teleportation, and quantum circulators.
• Score: 0.14660435286994572
• License:
• 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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