Single-atom cooling by superfluid immersion: A nondestructive method for qubits
Single-atom cooling by superfluid immersion: A nondestructive method for qubits
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DOI：
10.1103/physreva.69.022306
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发表时间：
2004-02-01
影响因子：
2.9
通讯作者：
Zoller, P
中科院分区：
文献类型：
--
作者：
Daley, AJ;Fedichev, PO;Zoller, P
我们提出了一种方案，通过将系统浸入超流体来冷却被限制在光学晶格位置的中性原子的运动状态。原子的运动受到超流体中激发的抑制，在适当的条件下，原子的内部状态保持不变。因此，该方案可用于冷却用于对一系列纠缠量子位进行无损编码的原子。在可实现的参数范围内，发现冷却到基态的速率足够大，可以在实验中使用。
We present a scheme to cool the motional state of neutral atoms confined in sites of an optical lattice by immersing the system in a superfluid. The motion of the atoms is damped by the generation of excitations in the superfluid, and under appropriate conditions the internal state of the atom remains unchanged. This scheme can thus be used to cool atoms used to encode a series of entangled qubits nondestructively. Within realizable parameter ranges, the rate of cooling to the ground state is found to be sufficiently large to be useful in experiments.