Generation and application of strongly squeezed vacuum states of light

强压缩真空光态的产生及应用

基本信息

批准号：
269638877
负责人：
Dr. Henning Vahlbruch
金额：
--
依托单位：
Institut für Gravitationsphysik
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2015
资助国家：
德国
起止时间：
2014-12-31 至 2017-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/269638877?language=en
关键词：
Generation application strongly squeezed vacuum

项目摘要

Squeezed vacuum states of light have been used in a variety of proof-of-principle experiments to reduce the photon counting noise (shot noise). The first long-term application of squeezed-light in quantum metrology has been ongoing since more than two years now in the gravitational wave detector GEO600, Hannover, Germany. This successful squeezed-light application has proven it´s general importance but also indicates the demand for higher generated squeezing levels produced in a less complex and therefore more reliable squeezed-light source setup.This project proposes the generation of squeezed vacuum states of light at a wavelength of 1064nm in a novel standing-wave doubly-resonant squeezing resonator. This topology is expected to provide unprecedented high squeezing levels ranging from audio-band frequencies up to MHz-sideband frequencies with a significantly reduced number of optical components required for the strong squeezing generation. As a consequence, a high reliability of the proposed squeezed light source seems realistic. Furthermore, we propose the application of the generated strongly squeezed states to two important aspects of non-classical laser interferometry. Firstly, the strongly squeezed states will be employed to determine the absolute quantum efficiency of photo diodes in a direct measurement. The precision of this measurement technique based non-classical light will beat the classical (relative) measurement accuracy and will give important insights for a high detection efficiency of squeezed light in many applications. Secondly, squeezed light will be used to demonstrate a non-classical light enhanced laser power stabilization experiment surpassing the quantum limit for the first time.

挤压真空状态已用于多种原则实验实验中，以减少光子计数噪声（射击噪声）。自两年多以来，在德国汉诺威的重力波检测器Geo600中，挤压光的首次长期应用在量子计量学中的首次应用。这项成功的挤压应用程序已经证明了它的普遍重要性，但也表明了对较不复杂且更可靠的挤压源源设置产生的更高产生的压缩水平的需求。该项目提出，该项目的产生挤压真空态，以1064nm的波长为1064nm，在一个新型的站立式双重旋转双重脉冲中，以1064nm的长度为单位。预计该拓扑提供了前所未有的高挤压水平，从音频频率频率到MHz侧带频率，并且强大的挤压发电所需的光学组件数量大大减少。结果，提议的挤压光源的高可靠性似乎是现实的。此外，我们建议将生成的强挤压状态应用于非经典激光干扰的两个重要方面。首先，将采用强挤压状态来确定直接测量中照片二极管的绝对量子效率。这种基于测量技术的非古典光的精度将击败经典的（相对）测量精度，并为许多应用中的挤压光的高检测效率提供重要的见解。其次，挤压光将用于展示非经典的光线增强激光稳定实验，该实验首次超过了量子极限。