A5101586979- Advanced Optical Sensing Technologies
- Advanced Fluorescence Microscopy Techniques
- Quantum Information and Cryptography
- Random lasers and scattering media
- Optical Coherence Tomography Applications
- Optical Imaging and Spectroscopy Techniques
- Image Enhancement Techniques
- Photoacoustic and Ultrasonic Imaging
- Quantum Mechanics and Applications
- Advanced Image Fusion Techniques
- Ocular and Laser Science Research
- Membrane Separation Technologies
- Cellular and Composite Structures
- Aluminum Alloys Composites Properties
- Quantum Computing Algorithms and Architecture
- Nanopore and Nanochannel Transport Studies
- Advanced Fiber Laser Technologies
- Remote Sensing and LiDAR Applications
- Image Processing Techniques and Applications
- Orbital Angular Momentum in Optics
- Mobile Ad Hoc Networks
- Advanced Image Processing Techniques
- Wireless Networks and Protocols
- Acoustic Wave Phenomena Research
- Quantum optics and atomic interactions
Beijing Academy of Quantum Information Sciences
2021-2024
Hefei National Center for Physical Sciences at Nanoscale
2017-2024
University of Science and Technology of China
2014-2024
Qilu University of Technology
2023-2024
Anhui University
2021-2024
Jinan Institute of Quantum Technology
2024
University of Shanghai for Science and Technology
2021
CAS Key Laboratory of Urban Pollutant Conversion
2019-2020
Chinese Academy of Sciences
2002-2014
State Key Laboratory of Transducer Technology
2014
Long-range active imaging has a variety of applications in remote sensing and target recognition. Single-photon LiDAR (light detection ranging) offers single-photon sensitivity picosecond timing resolution, which is desirable for high-precision three-dimensional (3D) over long distances. Despite important progress, further extending the range presents enormous challenges because only weak echo photons return are mixed with strong noise. Herein, we tackled these by constructing...
Significance Non–line-of-sight (NLOS) imaging can recover details of a hidden scene from the indirect light that has scattered multiple times. Despite recent advances, NLOS remained at short-range verifications. Here, both experimental and conceptual innovations yield hardware software solutions to increase meter kilometer range. This range is about three orders magnitude longer than previous experiments. The results will open avenues for development techniques relevant applications...
Single-photon light detection and ranging (LiDAR), offering single-photon sensitivity picosecond time resolution, has been widely adopted for active imaging applications. Long-range is a great challenge, because the spatial resolution degrades significantly with range due to diffraction limit of optics, only weak echo signal photons can return but mixed strong background noise. Here we propose demonstrate photon-efficient LiDAR approach that achieve sub-Rayleigh over long ranges. This...
Twin-field quantum key distribution (TF-QKD) has emerged as a promising solution for practical communication over long-haul fiber. However, previous demonstrations on TF-QKD require the phase locking technique to coherently control twin light fields, inevitably complicating system with extra fiber channels and peripheral hardware. Here we propose demonstrate an approach recover single-photon interference pattern realize \emph{without} locking. Our separates time into reference frames frames,...
Single-photon light detection and ranging (LiDAR) has played an important role in areas from target identification 3D imaging to remote sensing. Its high sensitivity provides the feasibility of lightweight LiDAR systems for resource-limited airborne spaceborne platforms. Here, we design demonstrate single-photon towards compact, small-sized, low-power payload. To reduce system size, utilize small telescopes with optical aperture 47 mm develop sub-pixel scanning approach enhance resolution....
Single-photon light detection and ranging (LiDAR) has emerged as a strong candidate technology for active imaging applications. In particular, the single-photon sensitivity picosecond timing resolution permits high-precision three-dimensional (3D) capability through atmospheric obscurants including fog, haze smoke. Here we demonstrate an array-based LiDAR system, which is capable of performing 3D in obscurant over long ranges. By adopting optical optimization system photon-efficient...
Non-line-of-sight (NLOS) imaging has the ability to reconstruct hidden objects, allowing a wide range of applications. Existing NLOS systems rely on pulsed lasers and time-resolved single-photon detectors capture information encoded in time flight scattered photons. Despite remarkable advances, time-of-flight LIDAR approach limited temporal resolution struggles detect frequency-associated directly. Here, we propose demonstrate coherent scheme-frequency-modulated continuous wave calibrated by...
Polarization modulation plays a key role in polarization-encoding quantum distribution (QKD). Here, we report new, to the best of our knowledge, polarization scheme based on an inherently stable Sagnac interferometer. The presented is free mode dispersion and calibration as well insensitive environmental influences. Successful experiments at repetition frequency 1.25 GHz have been conducted demonstrate feasibility stability scheme. measured average bit-error rate four states low 0.27% for 80...
Non-line-of-sight (NLOS) imaging techniques have the ability to look around corners, which is of growing interest for diverse applications. We explore compressed sensing in active NLOS and show that can greatly reduce required number scanning points without compromise quality. Particularly, we perform analysis both confocal occlusion-based periscopy. In experiment, demonstrate with only 5 × reconstructing a three-dimensional hidden image has 64 spatial resolution. The results total capture...
We demonstrate photon-counting single-pixel imaging in the ultraviolet region. Toward this target, we develop a high-performance compact single-photon detector based on 4H-SiC avalanche diode (SPAD), where tailored readout circuit with active hold-off time is designed to restrain noise and operate SPAD free-running mode. use structured illumination reconstruct 192$\times$192 compressed images at 4 fps frame rate. To show superior capability of characteristics, our system identify distinguish...
Quantum entanglement was termed ``spooky action at a distance'' in the well-known paper by Einstein, Podolsky, and Rosen. Entanglement is expected to be distributed over longer distances both practical applications fundamental research into principles of nature. Here, we present proposal for distributing entangled photon pairs between Earth Moon using Lagrangian point distance 1.28 light seconds. One most fascinating features this long-distance distribution as follows. can perform Bell test...
Specular Reflections often exist in the endoscopic image, which not only hurts many computer vision algorithms but also seriously interferes with observation and judgment of surgeon. The information behind recovery specular reflection areas is a necessary pre-processing step medical image analysis application. existing highlight detection method usually suitable for medium-brightness images. removal applicable to images without large regions, when dealing high-resolution complex texture...
Long-range active imaging has widespread applications in remote sensing and target recognition. Single-photon light detection ranging (lidar) been shown to have high sensitivity temporal resolution. On the application front, however, operating range of practical single-photon lidar systems is limited about tens kilometers over Earth's atmosphere, mainly due weak echo signal mixed with background noise. Here, we present a compact coaxial system capable realizing 3D at up 201.5 km. It achieved...
Photon-efficient imaging, which captures 3D images with single-photon sensors, has enabled a wide range of applications. However, two major challenges limit the reconstruction performance, i.e., low photon counts accompanied by signal-to-background ratio (SBR) and multiple returns. In this paper, we propose unified deep neural network that, for first time, explicitly addresses these challenges, simultaneously recovers depth maps intensity from photon-efficient measurements. Starting general...
Non-line-of-sight (NLOS) imaging techniques have the ability to look around corners, which attracts growing interest for diverse applications in autonomous navigation, medicine, transportation, manufacturing and many other domains. At present, recover hidden scenes, most existing transient NLOS methods need full histogram at each scanning point, requires hundreds of detected photons obtain both time-of-flight (TOF) information intensity information. In this paper, we introduce a...
Single-photon light detection and ranging (LiDAR) has broad applications from remote sensing to target recognition. In most cases, however, the repetition period of pulsed laser limits maximum distance that can be unambiguously determined. The relative distances are normally obtained using a depth map. Here, we propose demonstrate photon-efficient three-dimensional (3D) imaging framework which permits operation high pulse rates for long-range without range ambiguity. Our approach uses only...
The single-photon sensitivity and picosecond time resolution of light detection ranging (LiDAR) can provide a full-waveform profile for retrieving the three-dimentional (3D) target separated from foreground clutter. This capability has made LiDAR solution imaging through obscurant, camouflage nets, semitransparent materials. However, obstructive presence clutter limited pixel numbers detector arrays still pose challenges in achieving high-quality imaging. Here, we demonstrate array system...
Single-photon light detection and ranging (LiDAR) has emerged as a strong candidate technology for active imaging applications. Benefiting from the single-photon sensitivity in detection, long-range can be realized with low-power laser small-aperture transceiver. However, existing kilometer-range imagers are bulky have long data acquisition time. Here we present compact co-axial LiDAR system 3D imaging. A fiber-based transceiver 2.5 cm effective aperture was employed to realize robust...