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arXiv · 1902.10293

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
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Abstract

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.

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Xuan-Jian He, Jun Jia, Gao-Feng Jiao, L. Q. Chen, Weiping Zhang, Chun-Hua Yuan. 2019-05-16. A novel two-mode squeezed light based on double-pump phase-matching. https://doi.org/10.1088/1674-1056%2Fab8abd

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