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arXiv 0708.2302quant-ph
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非破坏性无相互作用的原子-光子控制非门

Nondestructive interaction-free atom-photon controlled-NOT gate

Mladen Pavicic

摘要:

我们提出了一个概率(理想情况下50%)的非破坏性相互作用的原子-光子控制非门,其中非破坏性意味着所有四个传出的目标光子模式的门是可用的和前馈。单个原子由受激拉曼绝热通道跃迁控制,光子由具有两个出射端口的环形谐振腔控制。现实的估计,我们得到的离子被限制在保罗陷阱周围的谐振器安装显示,可以实现强的原子-光子耦合。它还示出了如何可以用于控制原子态的叠加的谐振腔。

英文摘要:

We present a probabilistic (ideally 50%) nondestructive interaction-free atom-photon controlled-NOT gate, where nondestructive means that all four outgoing target photon modes of the gate are available and feed-forwardable. Individual atoms are controlled by a stimulated Raman adiabatic passage transition and photons by a ring resonator with two outgoing ports. Realistic estimates we obtain for ions confined in a Paul trap around which the resonator is mounted show that a strong atom-photon coupling can be achieved. It is also shown how the resonator can be used for controlling superposition of atom states.

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