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重大突破!中国科学家成功观测→
Ke Ji Ri Bao· 2025-08-28 12:30
Core Insights - Chinese scientists have successfully observed a new type of "thermal" topological edge state on a 125-bit superconducting quantum chip, paving a new path for protecting fragile quantum information [1][4] - The research was published in the latest issue of Nature and involved collaboration between Tsinghua University and Zhejiang University [1] Group 1: Research Findings - The study focuses on symmetry-protected topological edge states, which are novel states of matter in condensed matter physics, known for their resistance to specific symmetry disturbances and potential in quantum information [4] - The research team conducted quantum simulation experiments using the "Tianmu 2" superconducting quantum chip, which features flexible programmability and high-precision synchronous quantum logic operations [4] - The team successfully observed topological edge states that are unaffected by thermal excitations during approximately 270 layers of quantum circuit evolution, and they investigated the dynamics of thermal excitations in a preheated state [4] Group 2: Methodology and Implications - The research established a feasible digital quantum simulation method based on high-precision control of the 100-bit superconducting quantum chip, providing new experimental means to explore topological materials at finite temperatures [4] - The team also utilized robust topological edge states to encode and prepare logical Bell states, effectively validating their robustness against thermal excitations [4]
逻辑比特科技团队在Nature发表论文,实现新型“热”拓扑边缘态
Tai Mei Ti A P P· 2025-08-28 01:54
Group 1 - The research team, including core members from Logical Qubit Technology, published a paper in Nature demonstrating a new type of "thermal" topological edge state on the Tianmu 2 quantum chip, which provides a new pathway for protecting fragile quantum information [1] - The topological edge state is a novel state in condensed matter physics that can effectively resist specific symmetry noise, enhancing the reliability of quantum computing [1] - The newly achieved "thermal" topological edge state indicates that the "prethermalization" mechanism can effectively resist thermal excitations in finite temperature quantum systems, leading to more robust and longer-lived topological edge states [1] Group 2 - The Tianmu 2 quantum chip, developed by Logical Qubit Technology, features over 100 qubits with a single-qubit gate fidelity of 99.95% and a two-qubit gate fidelity of 99.5%, supporting the realization of complex quantum many-body states [2] - The experiment involved constructing a chain of 100 particles on the Tianmu 2 chip, demonstrating that the topological edge states maintained lifetimes similar to their zero-temperature ground state, showcasing unprecedented robustness against thermal disturbances [4] Group 3 - The high-performance quantum measurement and control system developed by Logical Qubit Technology is crucial for synchronously and precisely controlling the qubits, which is essential for observing thermal excitations and achieving the new "thermal" topological edge state [5] - The measurement and control system is modular and can be expanded to synchronize thousands of qubits, making it suitable for future large-scale quantum computing applications [5][6] Group 4 - Logical Qubit Technology was established in June 2022, with core members from Zhejiang University’s superconducting quantum computing laboratory, and has previously set world records for global entanglement of qubits [8] - The company has developed a full range of technologies and products centered on quantum chip design and fabrication, including quantum measurement and control systems, quantum computers, and quantum cloud platforms [8] - The CEO of Logical Qubit Technology, Wang Zhen, aims to position the company as a world-class quantum computing enterprise, focusing on the transition from physical to logical qubits to accelerate the arrival of the quantum computing era [8]
我国科学家在百比特量子芯片上实现新奇量子物态
Xin Hua She· 2025-08-27 15:15
Core Insights - Chinese scientists have achieved a novel quantum state known as "thermal" topological edge states on a 100-bit superconducting quantum chip, addressing the challenge of thermal noise interference in symmetry-protected topological edge states [1][3] - The research was conducted by teams from Zhejiang University and Tsinghua University, and published in Nature on August 27 [1] Group 1: Research Findings - The study demonstrates that topological edge states, which are stable quantum states bound to the edges of a quantum system, are typically susceptible to thermal noise and exist only at absolute zero [1] - The research team introduced a theoretical concept called "preheating" to protect symmetry-protected topological edge states from thermal excitation [3] - Experiments conducted on the "Tianmu 2" superconducting quantum chip, which features 125 superconducting qubits, confirmed the effectiveness of the "preheating" mechanism in creating robust long-lived topological edge states [3] Group 2: Implications - The findings provide new experimental methods for exploring topological states at finite temperatures, which are above absolute zero, showcasing the application value of superconducting quantum chips in simulating novel states [3] - This research opens new pathways for developing quantum storage systems that are resistant to noise at finite temperatures [3]