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arXiv 0802.3538quant-ph
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用集体受激拉曼绝热通道无消相干制备囚禁离子的Dicke态

Decoherence-free preparation of Dicke states of trapped ions by collective stimulated Raman adiabatic passage

I. E. Linington, N. V. Vitanov

摘要:

我们提出了一个简单的技术,用于产生任意大小的Dicke态的囚禁离子链。该方法使用两对延迟但部分重叠的激光脉冲来全局寻址整个链,以沿着多离子暗态设计集体绝热通道。我们的技术,这是一个多粒子的受激拉曼绝热通道(STIRAP)的推广,是消相干自由相对于自发发射和鲁棒性对实验参数的适度波动。此外,由于该过程非常迅速,在实际实验条件下加热的影响几乎可以忽略不计。我们预测,整体保真度的迪克状态的合成涉及十个离子共享两个激发应接近98%,目前可实现的实验参数。

英文摘要:

We propose a simple technique for the generation of arbitrary-sized Dicke states in a chain of trapped ions. The method uses global addressing of the entire chain by two pairs of delayed but partially overlapping laser pulses to engineer a collective adiabatic passage along a multi-ion dark state. Our technique, which is a many-particle generalization of stimulated Raman adiabatic passage (STIRAP), is decoherence-free with respect to spontaneous emission and robust against moderate fluctuations in the experimental parameters. Furthermore, because the process is very rapid, the effects of heating are almost negligible under realistic experimental conditions. We predict that the overall fidelity of synthesis of a Dicke state involving ten ions sharing two excitations should approach 98% with currently achievable experimental parameters.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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