Independent Control of Co-polarized and Cross-polarized Light Using Metasurface for Vector Vortex Beam Generation

Опубликована: Март 8, 2025

We present a metasurface design for generating multi-channel vector vortex beams through simultaneous control of phase and polarization states. The consists nested silicon nanopillars on SiO2 substrate, designed to operate at 800 nm wavelength. By implementing independent deflection phase, lens each channel, we achieve the generation dual-channel with different topological charges. Numerical simulations demonstrate successful in separate channels, both identical (l = 1) 1 l 2) simulation results show well-defined doughnut-shaped intensity profiles precise channel focal plane, confirming our design's capability complex beam manipulation multiple channels.

Язык: Английский

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Implementation of double Feynman gate in high dimensional quantum systems

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Апрель 9, 2025

The photonic platform has emerged as a preferred choice for quantum computing and information processing due to its low loss high integration capabilities. In the present research, we propose high-dimensional double Feynman gate utilizing single-photon hybrid degrees of freedom coding. This can manipulate two qubits simultaneously, demonstrating effective state conversion. Our experimental design offers valuable insights investigation optical logic gates advances fundamental research.

Язык: Английский

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Steering high-order perfect vector beams in coherent laser arrays for suppressive crosstalk optical links

Applied Physics Letters, Год журнала: 2025, Номер 126(22)

Опубликована: Июнь 2, 2025

Coherent beam combining (CBC) has offered an unparalleled approach in achieving high-capacity and high-bandwidth free-space optical (FSO) communication due to its versatile integration functionality advanced synthetic ability. However, the existing CBC technologies focus primarily on phase engineering, where crosstalk between different modes is easily involved, thus leading nontrivial FSO links based current coherent laser arrays (CLAs). To address this challenge, we propose encoding method that enables reduction via nonorthogonal polarization multiplexing. This achieved by leveraging concentrically arranged high-order perfect vector beams (PVBs) well-designed structure of CLAs. Moreover, achievable arbitrary PVBs could strongly support establishment high-dimensional paradigm. As a conceptual demonstration, illustrate information transfer case “NUDT” with zero bit error rate, indicating controlled CLA advantageous suppressive multi-channels. Compared coupling appearing coaxial transmitting vortex beams, observed display completely independent stable paths. Therefore, manipulation within system hopefully continuously improving performances links.

Язык: Английский

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Structured light meets integrated photonics

Photonics Insights, Год журнала: 2024, Номер 4(1), С. C01 - C01

Опубликована: Дек. 9, 2024

Язык: Английский

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