利用87Rb蒸汽产生脉冲和连续波压缩光。

Generation of pulsed and continuous-wave squeezed light with 87Rb vapor.

作者信息

Agha Imad H, Messin Gaétan, Grangier Philippe

机构信息

Laboratoire Charles Fabry, Institut d'Optique, CNRS, Univ.Paris-Sud, Campus Polytechnique, 91127 Palaiseau Cedex,

出版信息

Opt Express. 2010 Mar 1;18(5):4198-205. doi: 10.1364/OE.18.004198.

DOI:10.1364/OE.18.004198

PMID:20389432

Abstract

We present experimental studies on the generation of pulsed and continuous-wave squeezed vacuum via nonlinear rotation of the polarization ellipse in a (87)Rb vapor. Squeezing is observed for a wide range of input powers and pump detunings on the D1 line, while only excess noise is present on the D2 line. The maximum continuous-wave squeezing observed is -1.4 +/- 0.1 dB (-2.0 dB corrected for losses). We measure -1.1 dB squeezing at the resonance frequency of the (85)Rb F = 3 --> F' transition, which may allow the storage of squeezed light generated by (87)Rb in a (85)Rb quantum memory. Using a pulsed pump, pulsed squeezed light with -1 dB of squeezing for 200 ns pulse widths is observed at 1 MHz repetition rate.

摘要

我们展示了通过（87）Rb 蒸汽中偏振椭圆的非线性旋转来产生脉冲和连续波压缩真空的实验研究。在 D1 线上，对于广泛的输入功率和泵浦失谐范围都观察到了压缩，而在 D2 线上仅存在过量噪声。观察到的最大连续波压缩为 -1.4 +/- 0.1 dB（经损耗校正后为 -2.0 dB）。我们在（85）Rb F = 3 --> F' 跃迁的共振频率处测量到 -1.1 dB 的压缩，这可能允许将（87）Rb 产生的压缩光存储在（85）Rb 量子存储器中。使用脉冲泵浦，在 1 MHz 的重复频率下，观察到了脉宽为 200 ns、压缩为 -1 dB 的脉冲压缩光。