Effect of spatial walk-off on squeezing properties of quantum optical frequency combs
文献类型：期刊论文
| 作者 | Juan, Li2; Peng, Liu1,2; Xiao, Xiang2; Tao, Liu1,2; Dong, Rui-Fang1,2; Zhang, Shou-Gang2 |
| 刊名 | ACTA PHYSICA SINICA
 |
| 出版日期 | 2023-04-20 |
| 卷号 | 72期号:8页码:8 |
| ISSN号 | 1000-3290 |
| 关键词 | quantum optical frequency comb squeezed state spatial walk-off |
| DOI | 10.7498/aps.72.20222343 |
| 英文摘要 | Quantum optical frequency combs are of great significance in the fields of quantum computing, quantum information, and high precision quantum measurement, which can be produced by using a degenerate type-I synchronously pumped optical parametric oscillator (SPOPO). When anisotropic crystal is used as a nonlinear medium in the SPOPO, the spatial walk-off effect will occur due to the birefringence effect, which cannot be ignored and will adversely affect the generation of squeezed state. In this work, we investigate the influence of spatial walk-off effect on the squeezing level of quantum optical frequency combs both theoretically and experimentally. A Ti : sapphire mode-locked femtosecond pulsed laser which produces 130 fs pulse trains at 815 nm with a repetition rate of 76 MHz is utilized as a fundamental source. Its second harmonic at 407.5 nm is used to pump the collinear BiB3O6 (BIBO) crystal for generating the squeezed vacuum frequency comb. It is indicated that as the crystal length increases, the area of interaction between pump light and signal light decreases gradually. Thus the enhancement of squeezing is eventually limited by the spatial walk-off effect. According to the simulations, the squeezing level reaches a maximum value when the crystal length is 1.49 mm. The quantum properties of squeezed vacuum optical frequency combs obtained for four crystal lengths (0.5, 1.0, 1.5 and 2.0 mm) are subsequently measured experimentally. When the length of BIBO is 1.5 mm, the maximum vacuum squeezing of (3.6 +/- 0.2) dB is obtained, which is (7.0 +/- 0.2) dB after being corrected for detection loss. The experimental results are consistent with the numerical simulations. This study demonstrates that the spatial walk-off effect in nonlinear crystal is a significant factor affecting the quantum optical frequency comb, and the theoretical model presented in this paper can be used to provide a guideline for optimizing the experimental implementation. |
| WOS关键词 | STATES ; INTERFEROMETER ; COMPENSATION ; LIGHT |
| 资助项目 | National Natural Science Foundation of China[12033007] ; National Natural Science Foundation of China[61875205] ; National Natural Science Foundation of China[61801458] ; National Natural Science Foundation of China[91836301] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDB-SW-SLH007] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDC07020200] ; "Western Young Scholars" Project of Chinese Academy of Sciences[XAB2019B17] ; "Western Young Scholars" Project of Chinese Academy of Sciences[XAB2019B15] ; Key Program of Chinese Academy of Sciences[ZDRW-KT-2019-1-0103] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | CHINESE PHYSICAL SOC |
| WOS记录号 | WOS:000985800800012 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; "Western Young Scholars" Project of Chinese Academy of Sciences ; "Western Young Scholars" Project of Chinese Academy of Sciences ; Key Program of Chinese Academy of Sciences ; Key Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; "Western Young Scholars" Project of Chinese Academy of Sciences ; "Western Young Scholars" Project of Chinese Academy of Sciences ; Key Program of Chinese Academy of Sciences ; Key Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; "Western Young Scholars" Project of Chinese Academy of Sciences ; "Western Young Scholars" Project of Chinese Academy of Sciences ; Key Program of Chinese Academy of Sciences ; Key Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; "Western Young Scholars" Project of Chinese Academy of Sciences ; "Western Young Scholars" Project of Chinese Academy of Sciences ; Key Program of Chinese Academy of Sciences ; Key Program of Chinese Academy of Sciences |
| 源URL | [http://210.72.145.45/handle/361003/14231]  |
| 专题 | 国家授时中心_量子频标研究室 |
| 通讯作者 | Dong, Rui-Fang |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Natl Time Serv Ctr, Key Lab Time & Frequency Primary Stand, Xian 710600, Peoples R China |
| 推荐引用方式 GB/T 7714 | Juan, Li,Peng, Liu,Xiao, Xiang,et al. Effect of spatial walk-off on squeezing properties of quantum optical frequency combs[J]. ACTA PHYSICA SINICA,2023,72(8):8. |
| APA | Juan, Li,Peng, Liu,Xiao, Xiang,Tao, Liu,Dong, Rui-Fang,&Zhang, Shou-Gang.(2023).Effect of spatial walk-off on squeezing properties of quantum optical frequency combs.ACTA PHYSICA SINICA,72(8),8. |
| MLA | Juan, Li,et al."Effect of spatial walk-off on squeezing properties of quantum optical frequency combs".ACTA PHYSICA SINICA 72.8(2023):8. |
入库方式： OAI收割
来源：国家授时中心
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