Entanglement propagation of a quantum optical vortex state

Banerji, Anindya; Singh, R. P.; Banerjee, D.; Bandyopadhyay, Abir

doi:10.1016/j.optcom.2016.06.025

Cited by 12 publications

(3 citation statements)

References 41 publications

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“…As a versatile broadband vortex beam generator, this system not only facilitates the generation and modulation of a perfect vortex phase but also allows precise control of the output intensity of the vortex part and Gaussian part by adjusting the voltage applied on the electrically controlled LC q-plate [32][33][34]. Our work provides a fully electrically controlled" convenient, efficient, low-cost, high-precision, and easily integrative optical system for vortex beam generating and modulating, and is expected to expand the applications of vortex beams in national defense and military fields such as optical communication, laser processing, high-density optical storage, high-resolution imaging, and quantum technology [35][36][37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 98%

Broadband Vortex Beam Modulating System Based on Electrically Controlled Liquid Crystal Devices

Zhou,

Zhu,

Xie

et al. 2023

Photonics

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Vortex beams with helical phase wavefronts have recently emerged as a research hotspot because of their widespread applications such as ultra-high dimensional information encoding, quantum entanglement, and data transmission due to their unique properties. Research, as of yet, on the easy preparation of vector vortex beams is hindered by technical bottlenecks such as large mechanical modulation errors and limited bandwidths of meta-structured devices in spite of the massive experimental and theoretical breakthroughs in the generation of vortex beams that have been made. To make up for the deficiency in this area, we propose here a broadband vortex beam modulating system based on electrically controlled liquid crystal (LC) devices. An electrically controlled LC q-plate and an LC broadband polarization grating (PG) are integrated in the system as the crux devices. The system enables pure vortex-phase modulation within a wide spectral range in the visible spectrum and electrical control on the output beam intensity of the vortex and Gaussian components. Experiments at different voltages of 533 nm and 632.8 nm were conducted for validation. This system overcomes the complexity and stringent optical path requirements of traditional methods for generating vortex beams, offering an efficient, convenient, and rapidly tunable approach for generating vortex beams that is easily and highly integrable.

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Section: Introductionmentioning

confidence: 98%

Broadband Vortex Beam Modulating System Based on Electrically Controlled Liquid Crystal Devices

Zhou,

Zhu,

Xie

et al. 2023

Photonics

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“…Due to its singularity effect, OVB has a helical phase exp(i lφ ) in the wavefront structure, where l is the topological charge (TC) number which can take any integer value, φ denotes the azimuthal angle and ħ is the Planck constant. Since then, OVB has been widely used in quantum information processing [ 3 , 4 ], quantum entanglement [ 5 ], optical micromanipulation [ 6 , 7 ], optical communication [ 8 , 9 , 10 ] and nonlinear optics [ 11 , 12 ]. Hence, with the increasing demand for practical applications, OVB needs to be further studied: from generating [ 13 , 14 , 15 ] and measuring [ 16 ] to shaping OVB [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Integrated Generation and Shaping of Airy and Bessel Vortex Beams Based on All-Dielectric Metasurface

et al. 2023

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Integrating multiple independent functions into a single optical component is one of the most important topics in research on photoelectric systems. In this paper, we propose a multifunctional all-dielectric metasurface that can achieve a variety of non-diffractive beams depending on the polarization state of the incident light. Using the anisotropic TiO2 rectangular column as the unit structure, the three functions of generating polygonal Bessel vortex beams under left-handed circularly polarized incidence, Airy vortex beams under right-handed circularly polarized incidence and polygonal Airy vortex-like beams under linearly polarized incidence are realized. In addition, the number of polygonal beam sides and the position of focal plane can be adjusted. The device could facilitate further developments in scaling complex integrated optical systems and fabricating efficient multifunctional components.

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“…Optical vortices (OVs), also known as phase singularities, have aroused considerable interest in recent years due to their unique physical properties such as spiraling Poynting vector and the zero axial irradiance [1,2]. These two characteristics have given rise to powerful capabilities for applications in optical communications, microscopy, quantum optics, and microparticle manipulation.…”

Section: Introductionmentioning

confidence: 99%

Single-focus phase singularity generated by spiral zone plate with quasi-random distributed quantum dots

Zang¹,

Miao²,

Liang³

et al. 2022

J. Phys. D: Appl. Phys.

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We report new vortex lens for producing single-focus phase singularity which termed as quasi-random-dot-array binary spiral zone plates (QBSZPs). Different from the abrupt transitions of the conventional spiral zone plates (SZPs), the key idea of the QBSZPs is to realize a sinusoidal transmittance by properly arranging lots of quantum dot array which takes on the values of 0 and 1 in two dimensions. In this typical design, the number density of the selected primitives obeys sinusoidal distribution along the radial direction and quasi-random in the azimuthal direction. Theoretical analysis indicate that the higher-order foci which inevitably exist in the SZPs have been indeed effectively suppressed with the QBSZPs. Moreover, the focusing performance of the QBSZPs is influenced by the ratio of circumcircle diameter of the primitives to the outermost zone width. These findings which have been demonstrated by the performed experiment may direct new avenue towards improving the performance of biomedical imaging, quantum computation and optical manipulation.

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Entanglement propagation of a quantum optical vortex state

Cited by 12 publications

References 41 publications

Broadband Vortex Beam Modulating System Based on Electrically Controlled Liquid Crystal Devices

Broadband Vortex Beam Modulating System Based on Electrically Controlled Liquid Crystal Devices

Numerical Simulation of Integrated Generation and Shaping of Airy and Bessel Vortex Beams Based on All-Dielectric Metasurface

Single-focus phase singularity generated by spiral zone plate with quasi-random distributed quantum dots

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