Detection of 15 dB Squeezed States of Light and their Application for the Absolute Calibration of Photoelectric Quantum Efficiency
Detection of 15 dB Squeezed States of Light and their Application for the Absolute Calibration of Photoelectric Quantum Efficiency
复制标题
DOI：
10.1103/physrevlett.117.110801
复制
发表时间：
2016-09-06
影响因子：
8.6
通讯作者：
Schnabel, Roman
中科院分区：
文献类型：
--
作者：
Vahlbruch, Henning;Mehmet, Moritz;Schnabel, Roman
光的压缩态属于最突出的非经典资源。它们在计量学中有着引人注目的应用，自2010年以来，它们在提高引力波探测器灵敏度方面的常规开发已经证明了这一点。本文报道了直接测量光的15db压缩真空态及其在校准光电探测量子效率方面的应用。校准对象是定制的具有高外量子效率优化的InGaAs正内禀负（p-i-n）光电二极管。对于波长为1064 nm的数量级为10(17)s（-1）的光子通量，校准结果为99.5%，不确定度为0.5% （k = 2）。校准既不需要任何标准也不需要入射光功率的知识，因此代表了光的压缩状态在量子计量中的有价值的应用。
Squeezed states of light belong to the most prominent nonclassical resources. They have compelling applications in metrology, which has been demonstrated by their routine exploitation for improving the sensitivity of a gravitational-wave detector since 2010. Here, we report on the direct measurement of 15 dB squeezed vacuum states of light and their application to calibrate the quantum efficiency of photoelectric detection. The object of calibration is a customized InGaAs positive intrinsic negative (p-i-n) photodiode optimized for high external quantum efficiency. The calibration yields a value of 99.5% with a 0.5% (k = 2) uncertainty for a photon flux of the order 10(17) s(-1) at a wavelength of 1064 nm. The calibration neither requires any standard nor knowledge of the incident light power and thus represents a valuable application of squeezed states of light in quantum metrology.