Cooling atoms into entangled states
Cooling atoms into entangled states
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DOI：
10.1088/1367-2630/11/8/083008
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发表时间：
2009-03
影响因子：
3.3
通讯作者：
G. Vacanti;Almut Beige
中科院分区：
文献类型：
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作者：
G. Vacanti;Almut Beige
我们讨论了通过简单地将原子冷却到一个相互作用哈密顿量的基态来制备高纠缠态的可能性。与激光边带冷却一样，我们利用了所需状态的相对较大的失谐，而所有其他量子比特状态都经历了共振激光驱动。一旦激发态原子的自发辐射使系统处于基态，它就会以非常高的保真度保持在那里，适用于各种实验参数和所有可能的初始状态。在介绍了一般理论之后，我们讨论了单量子比特和双量子比特的具体应用。
We discuss the possibility of preparing highly entangled states by simply cooling atoms into the ground state of an applied interaction Hamiltonian. As in laser sideband cooling, we take advantage of a relatively large detuning of the desired state, while all other qubit states experience resonant laser driving. Once spontaneous emission from excited atomic states prepares the system in its ground state, it remains there with a very high fidelity for a wide range of experimental parameters and all possible initial states. After presenting the general theory, we discuss concrete applications with one and two qubits.