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arXiv quant-ph/0511213quant-ph
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有效的交叉克尔非线性效应和具有囚禁离子的稳健相位门

Effective cross-Kerr nonlinearity and robust phase gates with trapped ions

F. L. Semiao, A. Vidiella-Barranco

摘要:

我们推导出一个有效的哈密顿量,它描述了一个系统中的交叉克尔型相互作用,其中包括一个两能级的囚禁离子耦合到腔内的量子化场。我们假设离子和场之间存在很大的失调(色散极限),这导致相互作用汉密尔顿涉及(玻色子)离子振动运动和场数算符的乘积。我们也证明了基于我们的哈密顿量的相位门操作的可行性。该门对自发发射不敏感,自发发射是量子计算实际实现的重要特征。

英文摘要:

We derive an effective Hamiltonian that describes a cross-Kerr type interaction in a system involving a two-level trapped ion coupled to the quantized field inside a cavity. We assume a large detuning between the ion and field (dispersive limit) and this results in an interaction Hamiltonian involving the product of the (bosonic) ionic vibrational motion and field number operators. We also demonstrate the feasibility of operation of a phase gate based on our hamiltonian. The gate is insensitive to spontaneous emission, an important feature for the practical implementation of quantum computing.

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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