Time-Resolved Observation of Thermalization in an Isolated Quantum System
Time-Resolved Observation of Thermalization in an Isolated Quantum System
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DOI：
10.1103/physrevlett.117.170401
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发表时间：
2016-10-19
影响因子：
8.6
通讯作者：
Schaetz, Tobias
中科院分区：
文献类型：
--
作者：
Clos, Govinda;Porras, Diego;Schaetz, Tobias
我们使用捕获的原子离子形成混合库仑晶体，并利用其声子来研究由单自旋耦合到工程玻色子环境组成的孤立量子系统。我们通过添加离子和控制相干耦合来增加系统的复杂性，从而观察到热化的出现：自旋可观测量的时间平均值接近微正则平均值，而相关的波动衰减。我们的平台具有精确控制系统大小，耦合强度和与外部世界隔离的功能，以探索平衡和热化的动力学。
We use trapped atomic ions forming a hybrid Coulomb crystal and exploit its phonons to study an isolated quantum system composed of a single spin coupled to an engineered bosonic environment. We increase the complexity of the system by adding ions and controlling coherent couplings and, thereby, we observe the emergence of thermalization: Time averages of spin observables approach microcanonical averages while related fluctuations decay. Our platform features precise control of system size, coupling strength, and isolation from the external world to explore the dynamics of equilibration and thermalization.