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arXiv 1209.0923quant-ph
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声子介导的多能级受激拉曼绝热通道产生Dicke态

Generation of Dicke States with Phonon-Mediated Multi-level Stimulated Raman Adiabatic Passage

Atsushi Noguchi, Kenji Toyoda, Shinji Urabe

摘要:

我们产生了两个和四个离子的半激发对称Dicke态。我们采用多能级受激拉曼绝热通道(STIRAP),其中间态是声子Fock态。这个过程对应于自旋压缩操作,并且在多能级STIRAP过程中产生半激发Dicke态。这种方法不需要对每个离子进行局部访问或制备声子Fock态。此外,由于它是一个绝热过程,因此它是稳健的。我们评估的迪克状态使用见证算子和确定的保真度的上限和下限,而不使用全量子层析成像。

英文摘要:

We generate half-excited symmetric Dicke states of two and four ions. We use multi-level stimulated Raman adiabatic passage (STIRAP) whose intermediate states are phonon Fock states. This process corresponds to the spin squeezing operation and half-excited Dicke states are generated during multi-level STIRAP. This method does not require local access for each ion or the preparation of phonon Fock states. Furthermore, it is robust since it is an adiabatic process. We evaluate the Dicke state using a witness operator and determine the upper and lower bounds of the fidelity without using full quantum tomography.

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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