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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]
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]