A two-mode squeezed light based on a double-pump phase-matching geometry*

被引：2
作者：
He, Xuan-Jian [1 ]
Jia, Jun [1 ]
Jiao, Gao-Feng [1 ]
Chen, Li-Qing [1 ]
Yuan, Chun-Hua [1 ,4 ]
Zhang, Wei-Ping [2 ,3 ,4 ]
机构：
[1] East China Normal Univ, Quantum Inst Light & Atoms, Dept Phys, State Key Lab Precis Spect, Shanghai 200062, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240, Peoples R China
[3] Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai 200240, Peoples R China
[4] Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China
来源：
CHINESE PHYSICS B | 2020年 / 29卷 / 07期
基金：
中国国家自然科学基金;
关键词：
four-wave mixing; phase matching; frequency degenerate and spatial nondegenerate; metrology; LOW-FREQUENCY; BEAM; OSCILLATION; STATES;
D O I：
10.1088/1674-1056/ab8abd
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We theoretically investigate the frequency-nondegenerate and frequency degenerate squeezed lights with a four-wave mixing process (4WM) driven by two pump fields crossing at a small angle. Different from a 4WM process driven by a single 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 withn(p)< 1, the bandwidth of the gain is relatively large due to the slow change in the refractive index with the two-photon detuning. In this region with an exchange of the roles of the pump and probe beams, the frequency degenerate and spatial nondegenerate twin beams can be generated, which has potential application in quantum information and quantum metrology.
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页数：9
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