Quantum-enhanced balanced detection for ultrasensitive transmission measurement
Quantum-enhanced balanced detection for ultrasensitive transmission measurement
复制标题
用于超灵敏传输测量的量子增强平衡检测
DOI：
10.1364/josab.403222
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发表时间：
2020
影响因子：
1.9
通讯作者：
Yoshitaka Taguchi
中科院分区：
文献类型：
--
作者：
Y. Ozeki;Yuuichi Miyawaki;Yoshitaka Taguchi
平衡检测是光学测量和光谱学中常用的消除激光强度噪声影响的方法。然而，平衡检测可以实现的信噪比（SNR）受到标准量子极限（SQL）的限制。在这里，我们提出了量子增强的平衡检测（QBD），这使我们能够提高信噪比超越SQL实现超灵敏的传输测量。在QBD中，压缩真空被注入到用于平衡检测的分束器（BS）的一个输入端口，以产生一对散粒噪声相互纠缠的光波。与以前的量子增强测量方法相比，QBD是有利的，因为它可以处理更高的光功率而不牺牲灵敏度增强的程度。本文介绍了准双折射理论，讨论了分束比和样品光损耗的影响。我们还描述了QBD在基于受激拉曼散射显微镜的分子振动成像灵敏度增强中的应用。
Balanced detection is a popular method to cancel out the effect of laser intensity noise in optical measurements and spectroscopy. However, the signal-to-noise ratio (SNR) that can be achieved with balanced detection is constrained by the standard quantum limit (SQL). Here, we propose quantum-enhanced balanced detection (QBD), which allows us to improve the SNR beyond the SQL to realize ultrasensitive transmission measurement. In QBD, squeezed vacuum is injected to one of the input ports of a beamsplitter (BS) used in balanced detection to produce a pair of light waves whose shot noises are entangled with each other. Compared with previous quantum-enhanced measurement methods, QBD is advantageous because it can handle a higher optical power without sacrificing the degree of sensitivity enhancement. We present the theory of QBD and discuss the effects of the splitting ratio of the BS and the optical loss caused by the sample under test. We also describe the application of QBD to the sensitivity enhancement of molecular vibrational imaging based on stimulated Raman scattering microscopy.
影响因子：
7
作者：
Lawrie, B. J.;Lett, P. D.;Pooser, R. C.
通讯作者：
Pooser, R. C.
影响因子：
35
作者：
Aasi, J.;Abadie, J.;Zweizig, J.
通讯作者：
Zweizig, J.