arXivDaily arXiv每日学术速递 周一至周五更新
arXiv quant-ph/0111140quant-ph
收藏

色散抵消的量子光学相干层析成像

Quantum optical coherence tomography with dispersion cancellation

Ayman F. Abouraddy, Magued B. Nasr, Bahaa E. A. Saleh, Alexander V. Sergienko, Malvin C. Teich

摘要:

我们提出了一种新的技术,称为量子光学相干层析成像(QOCT),进行层析测量与色散取消的分辨率。该技术也可以用来提取介质的频率依赖的折射率。QOCT利用双光子干涉仪,其中扫描延迟允许追踪符合干涉图。该技术与经典的光学相干断层扫描(OCT)相似。然而,它利用了一个非经典的纠缠双光子光源,允许测量的深度大于那些通过OCT,这遭受样品分散的有害影响。除了色散抵消之外,QOCT还提供比OCT更高的灵敏度,以及对于相同的源带宽,分辨率提高2倍。使用理想化样本比较QOCT和OCT。

英文摘要:

We propose a new technique, called quantum optical coherence tomography (QOCT), for carrying out tomographic measurements with dispersion-cancelled resolution. The technique can also be used to extract the frequency-dependent refractive index of the medium. QOCT makes use of a two-photon interferometer in which a swept delay permits a coincidence interferogram to be traced. The technique bears a resemblance to classical optical coherence tomography (OCT). However, it makes use of a nonclassical entangled twin-photon light source that permits measurements to be made at depths greater than those accessible via OCT, which suffers from the deleterious effects of sample dispersion. Aside from the dispersion cancellation, QOCT offers higher sensitivity than OCT as well as an enhancement of resolution by a factor of 2 for the same source bandwidth. QOCT and OCT are compared using an idealized sample.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑