Encryption of ghost imaging

Kong, Ling‐Jun; Li, Yongnan; Qian, Sheng-Xia; Li, Simin; Tu, Chenghou; Wang, Hui-Tian

doi:10.1103/physreva.88.013852

Cited by 45 publications

(25 citation statements)

References 33 publications

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“…[96] This highlights the EDR's connections to recent studies of effectively unpaired electrons based on projected exchange holes. [59][60][61][62] At stretched bond lengths, both RHF and FCI The RHF and FCI bond delocalization shifts in Figure 2 have a small positive peak at all plotted bond lengths. The distance d of this peak increases with bond length (Figure 2 region B).…”

Section: Calculations Use Restricted Hartree-fock (Rhf) Theory Unresmentioning

confidence: 97%

“…[56][57][58] Perhaps most pertinent to the present work, analyses of the projected Fermi hole provide insight into the interplay of exchange hole delocalization and strong correlation in dissociating bonds. [59][60][61][62] The electron delocalization range function EDRr; d ð Þ complements these tools by focusing on the distance between points r and r 0 in gr;r 0 À Á . The EDR quantifies the extent to which the 1-RDM about point r decays over r-r 0 with distance d. It does so by projecting gr;r 0 À Á onto a model 1-RDM that is centered at point r, and decays over r-r 0 with distance d, by construction: [61,62] as well as to recent extensions incorporating projection onto a localized model exchange hole.…”

mentioning

confidence: 99%

“…The EDR quantifies the extent to which the 1-RDM about point r decays over r-r 0 with distance d. It does so by projecting gr;r 0 À Á onto a model 1-RDM that is centered at point r, and decays over r-r 0 with distance d, by construction: [61,62] as well as to recent extensions incorporating projection onto a localized model exchange hole. [60,61] presents the equations necessary to evaluate Equation 2. We have used the EDR to quantify the delocalization of atoms and molecules, [63] solvated electrons, [64] and electrides.…”

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confidence: 99%

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The electron delocalization range in stretched bonds

Mehmood

Janesko

2016

Int J of Quantum Chemistry

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The electron delocalization range function EDR( r→,dtrue) (Janesko et al., J. Chem. Phys. 2014, 141, 144104) quantifies the width of the one‐particle density matrix about point r→, measuring aspects of delocalization. Here, we explore the EDR in stretched and compressed chemical bonds. The EDR illustrates how compressing chemical bonds localizes the one‐particle density matrix about the reference point, and captures aspects of fractional occupancy, and left‐right correlation in stretched covalent bonds.

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Section: Calculations Use Restricted Hartree-fock (Rhf) Theory Unresmentioning

confidence: 97%

mentioning

confidence: 99%

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confidence: 99%

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The electron delocalization range in stretched bonds

Mehmood

Janesko

2016

Int J of Quantum Chemistry

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“…5, the corresponding intensity and polarimetric images can be obtained according to Eqs. (16) and (17), and the results are presented in Fig. 6.…”

Section: Experimental Verificationmentioning

confidence: 99%

Polarization-multiplexing ghost imaging

Shi¹,

Zhang²,

Huang³

et al. 2018

Optics and Lasers in Engineering

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A novel technique for polarization-multiplexing ghost imaging is proposed to simultaneously obtain multiple polarimetric information by a single detector. Here, polarization-division multiplexing speckles are employed for object illumination. The light reflected from the objects is detected by a single-pixel detector. An iterative reconstruction method is used to restore the fused image containing the different polarimetric information by summing the multiplexed speckles and detected intensities. Next, clear images of the different polarimetric information are recovered by demultiplexing the fused image. The application of this method to the detection of two different polarized objects is presented, and the results clearly demonstrate that the proposed method is effective. An encryption experiment for polarimetric information is also performed by setting the multiplexed speckles' encoding as the keys

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“…The correlated nature of ghost imaging means that in certain circumstances, such as for weakly absorbing objects [11] or at low light levels [12], it can out-perform conventional imaging. Ghost imaging has applications in a number of areas including optical encryption [13,14], improved telecommunications [15] and remote sensing [16,17]. It also has the potential to reduce the dosage rates in imaging [7] and tomography [18] using radiation such as Xrays, where potential damage to the sample from the radiation is a concern.…”

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confidence: 99%

Higher-Order Quantum Ghost Imaging with Ultracold Atoms

Hodgman

Mann

et al. 2019

Phys. Rev. Lett.

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Ghost imaging is a quantum optics technique that uses correlations between two beams to reconstruct an image in one beam from photons that do not interact with the object being imaged. While pairwise (second order) correlations are usually used to create the image, higher order correlations can be utilized to improve the performance of ghost imaging. In this paper, we demonstrate higher order atomic ghost imaging, using entangled ultracold metastable helium atoms from an s-wave collision halo. We construct higher order ghost images up to 5th order and show that using higher order correlations can improve the visibility of the images without impacting the resolution. This is the first demonstration of higher order ghost imaging with massive particles and the first higher order ghost imaging protocol of any type using a quantum source.

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Encryption of ghost imaging

Cited by 45 publications

References 33 publications

The electron delocalization range in stretched bonds

The electron delocalization range in stretched bonds

Polarization-multiplexing ghost imaging

Higher-Order Quantum Ghost Imaging with Ultracold Atoms

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