Squeezed light at 1550 nm with a quantum noise reduction of 12.3 dB
Squeezed light at 1550 nm with a quantum noise reduction of 12.3 dB
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DOI：
10.1364/oe.19.025763
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发表时间：
2011-12-05
期刊：
影响因子：
3.8
通讯作者：
Schnabel, Roman
中科院分区：
文献类型：
--
作者：
Mehmet, Moritz;Ast, Stefan;Schnabel, Roman
最近已经证明了1550 nm波长处光的连续波压缩态，但迄今为止获得的噪声抑制因子仍然落后于当今在1064 nm处证明的最佳压缩值。在这里，我们报告的实现上的半单片非线性谐振器的基础上，双极化磷酸钛氧钾，使直接检测高达12.3 dB的压缩在5 MHz。压缩被观察到的频率为2 kHz，这是在引力波干涉仪的检测波段内。我们的研究结果表明，一个长期稳定的1550 nm压缩光源可以实现与强压缩覆盖整个第三代引力波探测器，如爱因斯坦望远镜的检测波段。(C)2011年美国光学学会
Continuous-wave squeezed states of light at the wavelength of 1550 nm have recently been demonstrated, but so far the obtained factors of noise suppression still lag behind today's best squeezing values demonstrated at 1064 nm. Here we report on the realization of a half-monolithic nonlinear resonator based on periodically-poled potassium titanyl phosphate which enabled the direct detection of up to 12.3 dB of squeezing at 5 MHz. Squeezing was observed down to a frequency of 2 kHz which is well within the detection band of gravitational wave interferometers. Our results suggest that a long-term stable 1550 nm squeezed light source can be realized with strong squeezing covering the entire detection band of a 3rd generation gravitational-wave detector such as the Einstein Telescope. (C) 2011 Optical Society of America