61 citations · 441 across the 39 of their papers we have counts for
41 papers
Length-dependent SWIR upconversion spectral response of noncritically phase-matched KTP crystals
Xiao-Hua Wang, Chang-Hao Min, Yin-Hai Li +2
Noncritically phase-matched (NCPM) KTP crystals support large-aperture bulk operation, avoid spatial walk-off, and relax angular-alignment requirements, making them attractive for…
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…
Passive Incoherent Ultrafast Mid-Infrared Upconversion Imaging and Its Calibration
Jin-Peng Li, Zhi-You Li, Zhao-Qi-Zhi Han +7
Ultrafast mid-infrared (MIR) imaging is a key enabling capability for monitoring transient thermal and plasma phenomena in scientific diagnostics and industrial safety. However, 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…
Widely tunable cavity-enhanced backward difference-frequency generation
Ming-Yuan Gao, Yue-Wei Song, Ren-Hui Chen +3
Difference-frequency generation (DFG) is a powerful technique for generating widely tunable infrared radiation. However, conventional phase-matching schemes may require tuning mult…
Observation of tuning properties in a doubly resonant backward optical parametric oscillator
Ming-Yuan Gao, Yue-Wei Song, Zhi-Cheng Guo +3
Doubly resonant optical parametric oscillators (OPOs) under continuous wave (CW) pumping are particularly notable for their low threshold and narrow linewidth. Backward OPOs (BOPOs…
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…
Creating multi-beam interference from two-beam interference with assistant of harmonics generation
Wuzhen Li, Zhiyuan Zhou, Li Chen +3
Linear optics-based multi-beam interference (MBI), like the Fabry-Perot interferometer, plays an important role in precision optical metrology applications such as laser stabilizat…
On Chip Quantum States Generation by Incoherent Light
Yue-Wei Song, Heng Zhao, Li Chen +9
On-chip quantum sources based on nonlinear processes are pivotal components in integrated photonics, driving significant advancements in quantum information technologies over recen…
Quantum key distribution based on mid-infrared and telecom band two-color entanglement source
Wu-Zhen Li, Chun Zhou, Yang Wang +11
Due to the high noise caused by solar background radiation, the existing satellite-based free-space quantum key distribution (QKD) experiments are mainly carried out at night, hind…
Quantum-Enhanced Polarimetric Imaging
Meng-Yu Xie, Su-Jian Niu, Zhao-Qi-Zhi Han +8
Polarimetric imaging, a technique that captures the invisible polarization-related properties of given materials, has broad applications from fundamental physics to advanced fields…
Effective multiband synthetic four-wave mixing by cascading quadratic processes
Li Chen, Zheng Ge, Su-Jian Niu +9
Four wave mixing (FWM) is an important way to generate supercontinuum and frequency combs in the mid-infrared band. Here, we obtain simultaneous synthetic FWM in the visible and mi…
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…
Polarization entanglement by two simultaneous backward phase-matching processes in a single crystal
Ming-Yuan Gao, Yin-Hai Li, Zhao-Qi-Zhi Han +4
Entanglement enables many promising applications in quantum technology. Devising new generation methods and harnessing entanglement are prerequisites for practical applications. He…
Quantum entanglement enabled ellipsometer for phase retardance measurement
Meng-Yu Xie, Su-Jian Niu, Yin-Hai Li +6
An ellipsometer is a vital precision tool used for measuring optical parameters with wide applications in many fields, including accurate measurements in film thickness, optical co…
Mid-Infrared Upconversion Imaging Under Different Illumination Conditions
Zheng Ge, Zhao-Qi-Zhi Han, Yi-Yang Liu +9
Converting the medium infrared field to the visible band is an effective image detection method. We propose a comprehensive theory of image up-conversion under continuous optical p…
Thermal camera based on frequency upconversion and its noise-equivalent temperature difference characterization
Zheng Ge, Zhi-Yuan Zhou, Jing-Xin Ceng +5
We present a scheme for estimating the noise-equivalent temperature difference (NETD) of frequency upconversion detectors (UCDs) that detect mid-infrared (MIR) light. In particular…
Harmonics-assisted optical phase amplifier
Wu-Zhen Li, Chen Yang, Zhi-Yuan Zhou +7
The change in the relative phase between two light fields serves as a basic principle for the measurement of the physical quantity that guides this change. It would therefore be hi…
Up-conversion detection of mid-infrared light carrying orbital angular momentum
Zheng Ge, Chen Yang, Yin-hai Li +5
Frequency up-conversion is an effective method of mid-infrared (MIR) detection by converting the long-wavelength photons to the visible domain, where efficient detectors are readil…
Measuring the tuning curve of spontaneous parameter down-conversion using a comet-tail-like pattern
Chen Yang, Zhi-Yuan Zhou, Yan Li +5
The comet-tail-like interference patterns are observed using photons from the spontaneous parametric down-conversion (SPDC) process. The patterns are caused by the angular-spectrum…
Extra-cavity-enhanced difference-frequency generation at 1.63 μm
Chen Yang, Shi-long Liu, Zhi-yuan Zhou +6
A 1632-nm laser has highly important applications in interfacing the wavelength of rubidium-based quantum memories (795 nm) and the telecom band (typically 1550 nm) by frequency co…
Increasing two-photon entangled dimensions by shaping input beam profiles
Shilong Liu, Yingwen Zhang, Chen Yang +7
Photon pair entangled in high dimensional orbital angular momentum (OAM) degree of freedom (DOF) has been widely regarded as a possible source in improving the capacity of quantum…
Frequency up-conversion of an infrared image via a flat-top pump beam
Chen Yang, Shi-Long Liu, Zhi-Yuan Zhou +6
The infrared imaging detection is an important and promising technology having wide applications. In this work, we report on the frequency up-conversion detection of an image based…