Interference effects in quantum-optical coherence tomography using spectrally engineered photon pairs
Pablo Yepiz Graciano, Ali Michel Angulo Martinez, Dorilian Lopez-Mago, Gustavo Castro-Olvera, Martha Rosete-Aguilar, Jesus Garduño-Mejia, Roberto Ramirez Alarco… 展开作者
Pablo Yepiz Graciano, Ali Michel Angulo Martinez, Dorilian Lopez-Mago, Gustavo Castro-Olvera, Martha Rosete-Aguilar, Jesus Garduño-Mejia, Roberto Ramirez Alarcon, Hector Cruz Ramirez, Alfred B. U'Ren
Optical-coherence tomography (OCT) is a technique that employs light in order to measure the internal structure of semi-transparent, e.g. biological, samples. It is based on the interference pattern of low-coherence light. Quantum-OCT (QOCT), instead, employs the correlation properties of entangled photon pairs, for example, generated by the process of spontaneous parametric downconversion (SPDC). The usual QOCT scheme uses photon pairs characterised by a joint-spectral amplitude with strict spectral anti-correlations. It has been shown that, in contrast with its classical counterpart, QOCT provides resolution enhancement and dispersion cancellation. In this paper, we revisit the theory of QOCT and extend the theoretical model so as to include photon pairs with arbitrary spectral correlations. We present experimental results that complement the theory and explain the physical underpinnings appearing in the interference pattern. In our experiment, we utilize a pump for the SPDC process ranging from continuous wave to pulsed in the femtosecond regime, and show that cross-correlation interference effects appearing for each pair of layers may be directly suppressed for a sufficiently large pump bandwidth. Our results provide insights and strategies that could guide practical implementations of QOCT.
From Disorder to Function: Entropy-Engineered Broadband Photonics with Ion-Transport-Stabilized Spectral Fidelity
Huazhong University of Science and Technology (HUST)（华中科技大学）；Guangdong HUST (Huazhong University of Science and Technology) Industrial Technology Research Institute（华南理工大学（华中科技大学）广东工业技术研究院）；University of Science and Technology of China（中国科学技术大学）；Artificial Intelligence for Science Institute（人工智能科学研究所）；Wuhan National Laboratory for Optoelectronics (WNLO)（武汉光电国家研究中心）；Fudan University（复旦大学）；Institute of Applied Physics and Computational Mathematics（应用物理与计算数学研究所）；Peking University（北京大学）；Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences（中国科学院上海有机化学研究所）
Electron-beam Writing of Spectrally Uniform Green Single-photon Emitters in Hexagonal Boron Nitride
Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences（中国科学院大学杭州高等研究院）；Zhejiang University（浙江大学）；University of Science and Technology of China（中国科学技术大学）；Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences（中国科学院上海光学精密机械研究所）
The City College of New York（纽约市立学院）；The Australian National University（澳大利亚国立大学）；University of Central Florida（中佛罗里达大学）；Air Force Research Laboratory（空军研究实验室）；City University of New York（纽约市立大学）
Statistical Optical Replication and Mixing of Spatial Information across Wavelengths
Faculty of Arts and Sciences, Beijing Normal University, Zhuhai, China（北京师范大学珠海校区文理学院）；Macao Centre for Research and Development in Advanced Materials, Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao S.A.R. China（澳门大学应用物理与材料工程研究院）；School of Physics and Astronomy, Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing, China（北京师范大学物理学院）
High Fidelity Artificial Quantum Thermal State Generation using Encoded Coherent States
Information Sciences Institute, University of Southern California（南加州大学信息科学研究所）；Ming Hsieh Department of Electrical and Computer Engineering, University of Southern California（南加州大学明海希电气与计算机工程系）；Department of Physics and Astronomy, University of Southern California（南加州大学物理与天文学系）
