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arXiv 1210.8335quant-phphysics.atom-phphysics.optics
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手性短脉冲laser训练分子自旋

Molecular spinning by a chiral train of short laser pulses

Johannes Floß, Ilya Sh. Averbukh

摘要:

我们提供了一个详细的理论分析的分子旋转激发的手性脉冲训练-一个序列的线性偏振脉冲的偏振方向旋转脉冲由一个可控的角度。该方案可以激发具有优先旋转方向(顺时针或逆时针)的分子旋转。我们表明,旋转的方向性是由不同的激发途径的量子干涉。手性脉冲训练能够选择性激发混合物中的分子同位素体和核自旋异构体。我们证明了这一点,使用14 N2和15 N2作为同位素体的例子,对位和邻位氮作为核自旋异构体的例子。

英文摘要:

We provide a detailed theoretical analysis of molecular rotational excitation by a chiral pulse train -- a sequence of linearly polarised pulses with the polarisation direction rotating from pulse to pulse by a controllable angle. Molecular rotation with a preferential rotational sense (clockwise or counter-clockwise) can be excited by this scheme. We show that the directionality of the rotation is caused by quantum interference of different excitation pathways. The chiral pulse train is capable of selective excitation of molecular isotopologues and nuclear spin isomers in a mixture. We demonstrate this using 14N2 and 15N2 as examples for isotopologues, and para- and ortho-nitrogen as examples for nuclear spin isomers.

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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