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arXiv 0909.2423quant-ph
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非经典原子自旋态的操纵

Manipulation of Non-classical Atomic Spin States

Tetsushi Takano, Shin-Ichi-Ro Tanaka, Ryo Namiki, Yoshiro Takahashi

摘要:

我们成功地操纵非经典原子自旋态。我们利用自旋量子非破坏测量产生压缩自旋态,并对原子施加非共振圆偏振光脉冲。通过改变脉冲宽度,我们清楚地观察到了各向异性量子噪声分布的旋转,与操纵相干自旋态的情况形成了良好的对比,其中量子噪声分布总是各向同性的。这对于量子态层析成像、量子交换和精密光谱测量是重要的一步。

英文摘要:

We report successful manipulation of non-classical atomic spin states. We generate squeezed spin states by a spin quantum nondemolition measurement, and apply an off-resonant circularly-polarized light pulse to the atoms. By changing the pulse duration, we have clearly observed a rotation of anisotropic quantum noise distribution in good contrast with the case of manipulation of a coherent spin state where the quantum noise distribution is always isotropic. This is an important step for quantum state tomography, quantum swapping, and precision spectroscopic measurement.

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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