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arXiv 1902.10293quant-ph
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基于双泵浦相位匹配的双模压缩光

A novel two-mode squeezed light based on double-pump phase-matching

Xuan-Jian He, Jun Jia, Gao-Feng Jiao, L. Q. Chen, Weiping Zhang, Chun-Hua Yuan

摘要:

利用两个小角度交叉的泵浦场驱动的四波混频过程产生了一种新型的双模非简并压缩光。通过交换泵浦光、探测光和共轭光的作用,我们证明了具有分离空间图案的频率简并双模压缩光。与由一个泵浦场驱动的4WM过程不同,可以通过角度调整将相应探测场$n_{p}$的折射率转换为大于$1$或小于$1$的值。在含有$n_{p}<1$的新区域中,由于折射率随双光子失谐的缓慢变化,增益的带宽相对较大。由于带宽对量子存储器的实际应用至关重要,宽带强度压缩光场为量子存储器提供了新的前景。

英文摘要:

A novel two-mode non-degenerate squeezed light is generated based on a four-wave mixing (4WM) process driven by two pump fields crossing at a small angle. By exchanging the roles of the pump beams and the probe and conjugate beams, we have demonstrated the frequency-degenerate two-mode squeezed light with separated spatial patterns. Different from a 4WM process driven by one pump field, the refractive index of the corresponding probe field $n_{p}$ can be converted to a value that is greater than $1$ or less than $1$ by an angle adjustment. In the new region with $n_{p}<1$, the bandwidth of the gain is relatively large due to the slow change in the refractive index with the two-photon detuning. As the bandwidth is important for the practical application of a quantum memory, the wide-bandwidth intensity-squeezed light fields provide new prospects for quantum memories.

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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