分离的时间晶体可在长距离内实现同步振荡

多顿工业大学的物理学家发现了一种现象：相距甚远的时间晶体能够自动同步到相同的频率并协调振荡。1该研究表明，通过自旋极化电子在砷化镓半导体内的运动，距离达40微米的多个时间晶体可以实现长程耦合。1这一距离超过了单个振荡器的特征尺度1000多倍。1

研究团队在零下270摄氏度的超低温环境下进行了实验，采用泵浦激光和探针激光的技术手段对电子-核自旋振荡进行观测。1这种长程同步机制源于自旋系统之间的非局域连接。1相关成果已发表在《自然通讯》期刊上。1

Physicists at Dortmund University of Technology have discovered that separated time crystals can achieve long-range synchronization through spin-polarized electrons within semiconductors.1 Multiple time crystals positioned up to 40 micrometers apart were able to lock onto the same frequency and oscillate together,1 a distance exceeding the characteristic scale of individual oscillators by more than 1,000 times.1

The synchronization mechanism operates through the coupling of electron-nuclear spin oscillations rather than conventional mechanical interactions.1 Experiments were conducted at temperatures of minus 270 degrees Celsius using pump and probe laser techniques.1 This finding reveals non-local connections between spin systems and has implications for the development of future spin-based devices.1

The research builds on earlier work from January 2024 demonstrating that continuous time crystals could persist for several hours within semiconductors.1 The team's results were published in Nature Communications.1