6 papers
Broadband Tunable Photon-Pair Generation and Spectrum Measurement Based on Noncritical Lithium Niobate Crystals
Zhao-Qi-Zhi Han, Bo-Wen Liu, He Zhang +8
Photon pairs play a vital role in modern science, driving extensive research into their generation. Yet, the narrow phase-matching bandwidth of conventional crystals has largely co…
Mid-infrared high-sensitive cavity-free in-situ CO gas sensing based on up-conversion detection
Zhao-Qi-Zhi Han, He Zhang, Fan Yang +8
Carbon monoxide (CO) is a significant indicator gas with considerable application value in atmospheric monitoring, industrial production and medical diagnosis. Its fundamental vibr…
Short-wave infrared broadband up-conversion imaging by using a noncritical phase matched bulk KTiOPO crystal
Xiaohua Wang, Zhaoqizhi Han, Zhenghe Zhou +6
Compared to cryogenically cooled conventional detectors, up-conversion detection enables efficient room-temperature short-wave infrared (SWIR) imaging. Although quasi-phase-matchin…
Generation of Near-ideal Indistinguishable Two-Photon State by Incoherent Light
Yue-Wei Song, Ming-Yuan Gao, Zhi-Cheng Guo +5
High-quality quantum states lie at the heart of advanced quantum information processing. The degree of photon indistinguishability is critical for applications from photonic quantu…
High resolution up-conversion imaging in the 10 μm band under incoherent illumination
Zhao-Qi-Zhi Han, Xiao-Hua Wang, Jin-Peng Li +6
Long-wavelength infrared band exhibits significant utility in thermal signature acquisition and molecular spectral analysis, among other applications. The up-conversion detection t…
Narrowband telecom band polarization-entangled photon source by superposed monolithic cavities
Ming-Yuan Gao, Yin-Hai Li, Yan Li +4
A high-quality narrowband polarization-entangled source in the telecom band is preferred to avoid frequency dispersion for long-distance transmission in optical fibers and to effic…