中国研究人员通过控制量子系统中暂时的稳定阶段，实现了量子混沌的减速，这一被称为预热化的现象为保存量子信息提供了可能途径。该技术允许研究人员“调整”量子退相干的速度，为管理复杂量子环境提供了重要工具。
中国科学院物理研究所的研究人员在《自然》杂志上报道，他们使用超导量子处理器成功控制了量子系统的预热化阶段。这一突破使量子混沌过程放缓，类似于轻推钟摆：它会摆动一段时间，但最终会减速并停止。
研究团队由范恒领导，他们观察到当量子系统受到干扰时，它会自然返回平衡状态，能量和信息会扩散直到均匀分布。通过调控，该团队实现了暂时的稳定阶段，延长了量子信息的保存时间。这对量子计算和量子密钥分发等应用具有潜在意义，例如增强类似于RSA的加密系统的安全性。
范恒表示，这一发现为量子信息处理提供了新工具，帮助应对量子环境中的复杂挑战。该研究发表于2026年2月20日，突显了中国在量子科学领域的进展。
Researchers in China have demonstrated heat flowing from cold to hot in a quantum system, potentially requiring updates to the second law of thermodynamics. Using a molecule as qubits, the team manipulated quantum information to achieve this reversal. The finding highlights differences between classical and quantum physics.
由 AI 报道
Researchers have used quantum superposition to help qubits violate a fundamental quantum limit, allowing them to maintain information five times longer. This breakthrough involves a three-qubit system that demonstrates extreme correlations over time. The finding could enhance quantum computing and metrology applications.
Researchers have discovered that entropy remains constant during the transition from a chaotic quark-gluon state to stable particles in proton collisions at the Large Hadron Collider. This unexpected stability serves as a direct signature of quantum mechanics' unitarity principle. The finding, based on refined models and LHC data, challenges initial intuitions about the process's disorder.
由 AI 报道
Researchers have mathematically shown that a quantum neural network could help measure hard-to-access properties of quantum objects, potentially cheating the Heisenberg uncertainty principle. By injecting randomness into the network, scientists might determine multiple incompatible properties more precisely. This approach could speed up applications in quantum computing and chemistry.