架起64米量子高速公路 深圳超导量子网络迎新突破

Core Viewpoint - The Shenzhen International Quantum Research Institute, in collaboration with Tsinghua University, has achieved a significant breakthrough in superconducting quantum networks by successfully demonstrating long-distance quantum teleportation over 64 meters with a fidelity of 78.3%, marking a critical advancement in distributed quantum computing technology [1][3][9]. Group 1: Research Achievements - The research team established a low-loss quantum channel of 64 meters between superconducting quantum chips, enabling high-quality long-distance quantum state transmission and entanglement generation [3][4]. - The team successfully demonstrated deterministic quantum teleportation of an unknown state with an average fidelity of 78.3%, surpassing the classical limit of 50% [8]. - The execution of a CNOT two-qubit quantum logic gate across two chips was achieved with a fidelity of 70.2%, indicating the potential for remote control of quantum bits in distributed quantum computing networks [8][9]. Group 2: Implications for Quantum Computing - This breakthrough provides a complete and feasible experimental scheme for constructing long-distance microwave quantum networks based on superconducting quantum circuits, overcoming a major technical barrier in distributed quantum computing [9][10]. - The successful demonstration of high-fidelity quantum communication over distances of several tens of meters paves the way for connecting quantum processors located in different cryogenic systems or laboratories [9][10]. - The research opens new avenues for foundational studies in microwave quantum electrodynamics and quantum optics, providing an ideal experimental platform for future research [9].