Improving the Atmosphere Turbulence Tolerance in Holographic Ghost Imaging System by Channel Coding

Zhao, Shengmei; Wang, Bei; Gong, Lei; Sheng, Yu‐Bo; Cheng, Wei‐Wen; Xiang, Dong; Zheng, Baoyu

doi:10.1109/jlt.2013.2267203

Cited by 25 publications

(3 citation statements)

References 24 publications

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“…For the transmission channel, the loss function can be expressed as η t = e −aZ , where a is the attenuation factor and Z is the transmission distance. Furthermore, AT would cause crosstalk between different OAM states [32,33], and the transmission probability η 0 , which illustrates the probability of the received photon with the same OAM state as the input, can be expressed by [34] η 0 = 1 π ˆ1 0 ρdρ ˆ2π 0 e −3.44…”

Section: The Key Generation Rate Of Oam-pm-qkd Protocolmentioning

confidence: 99%

Phase-matching quantum key distribution based on orbital angular momentum under atmospheric turbulence

Shen¹,

Chen²,

Wang³

et al. 2022

Laser Phys. Lett.

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We propose a phase-matching quantum key distribution (PM-QKD) protocol based on orbital angular momentum (OAM) to exceed the linear key-rate bound without quantum repeater in the paper, named OAM-PM-QKD protocol, where the coherent state consisting of OAM with opposite topological charges is used as the information carrier. With the equivalent entanglement distillation model, we analyze its security and then derive its key generation rate. The numerical simulation results show that the proposed OAM-PM-QKD protocol is able to exceed the linear key-rate bound when the transmission distance exceeds 230 km, and the maximum secure transmission distance is also longer than those of original PM-QKD protocol due to no misalignment in the basis. Furthermore, the influence of the atmospheric turbulence (AT) on the key generation rate is also discussed. The stronger the strength of AT is, the shorter the transmission distance is.

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Section: The Key Generation Rate Of Oam-pm-qkd Protocolmentioning

confidence: 99%

Phase-matching quantum key distribution based on orbital angular momentum under atmospheric turbulence

Shen¹,

Chen²,

Wang³

et al. 2022

Laser Phys. Lett.

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“…B, I is a 8 × 8 unit matrix. Equations (27) and 28provide a convenient way for studying the behavior of a ghost image formed with a TGSM beam in the presence of oceanic turbulence.…”

Section: Theory Of Gi With a Tgsm Beam In Turbulent Oceanmentioning

confidence: 99%

Ghost Imaging with a Partially Coherent Beam Carrying Twist Phase in a Turbulent Ocean: A Numerical Approach

Liu

et al. 2019

Applied Sciences

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Ghost imaging (GI) is an indirect imaging approach that can retrieve an object’s image even in a harsh environment through measuring the fourth-order correlation function (FOCF) between the signal and idle optical paths. In this paper, we study lensless GI with a partially coherent beam carrying twist phase, i.e., twisted Gaussian Schell-model (TGSM) beam, in the presence of oceanic turbulence. Explicit expression of the FOCF is derived based on the optical coherence theory and Rytov approximation, and the effects of the twist phase and the oceanic turbulence on the quality and visibility of image are investigated in detail through numerical examples. Our results show that the simulated oceanic turbulence strongly affects the GI. The quality of image decreases monotonously with an increase of the strength of turbulence whereas the visibility increases. When the illumination light carries a twist phase, the visibility of the image is improved while the quality of the image is reduced in contrast to those without a twist phase. By properly selecting the strength of the twist phase, the image can still be maintained at an acceptable level of quality with high visibility. Furthermore, it is found that the quality and visibility of the ghost image are less affected by the oceanic turbulence using a TGSM beam with larger twist factor. Our findings will be useful for the application of GI in an oceanic turbulent environment.

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“…GI has many advantages, such as high sensitivity, super resolution, anti-scattering, etc. Therefore, it has been applied to quantum imaging [5] , remote sensing [6] , atmospheric turbulence [7] and other fields. In 2008, computational ghost imaging (CGI) [8] , which is similar to the single pixel imaging [9] was proposed, it simplifies the number of detectors needed in the experiment.…”

Section: Introductionmentioning

confidence: 99%

Motion-corrected Fourier ghost imaging based on phase compensation

Chen

Zheng

Liu

et al. 2023

Ninth Symposium on Novel Photoelectronic Detection Technology and Applications

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The image quality of traditional computed ghost imaging is largely affected by the motion state of the target. When the target moves more than one pixel in the adjacent sampling interval, the image quality will decrease rapidly. Especially when the motion status of the target is unknown, high quality imaging will become difficult. To overcome the problem, we propose a simple and reliable method of imaging the moving target based on the reconstruction of Fourier Ghost Imaging (FGI) and phase compensation. The method uses the Fourier positioning patterns to estimate the displacement trajectory of the object followed by phase compensation of the spectrum. It combines the conjugate symmetry and sparsity properties of the Fourier spectrum to directly reconstruct the reasonable image of a moving object at low sampling rates, which saves time and computation. Simulation results show that the method does not require excessive priori knowledge and can achieve imaging of an object in different states of motion.

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Improving the Atmosphere Turbulence Tolerance in Holographic Ghost Imaging System by Channel Coding

Cited by 25 publications

References 24 publications

Phase-matching quantum key distribution based on orbital angular momentum under atmospheric turbulence

Phase-matching quantum key distribution based on orbital angular momentum under atmospheric turbulence

Ghost Imaging with a Partially Coherent Beam Carrying Twist Phase in a Turbulent Ocean: A Numerical Approach

Motion-corrected Fourier ghost imaging based on phase compensation

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