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Your search keyword '"Tian, Long"' showing total 14 results
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14 results on '"Tian, Long"'

10. Tuning temperature gradients in subwavelength plasmonic nanocones with tilted illumination

Author

Alessandro Alabastri, Remo Proietti Zaccaria, Joao Cunha, and Tian-Long Guo

Subjects
Materials science, Nanostructure, Computer simulation, business.industry, Linear polarization, Physics::Optics, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Atomic and Molecular Physics, and Optics, 010309 optics, Temperature gradient, symbols.namesake, Optics, Illumination angle, Angle of incidence (optics), 0103 physical sciences, symbols, 0210 nano-technology, business, Raman spectroscopy, Plasmon
Abstract

Inducing and controlling temperature gradients in illuminated subwavelength plasmonic structures is a challenging task. Here, we present a strategy to remotely induce and tune temperature gradients in a subwavelength metallic nanocone by adjusting the angle of incidence of linearly polarized continuous-wave illumination. We demonstrate, through rigorous three-dimensional numerical simulations, that properly tilting the incident illumination angle can increase or decrease the photoinduced temperature gradients within the nanostructure. We analyze the apex-base photoinduced temperature gradient for different illumination directions, resembling typical illumination schemes utilized in surface or tip-enhanced Raman spectroscopy.

Published
2020

14. Generating six pairs of bandwidth-expanded entangled sideband modes via time delay compensation.

Author

Shi S, Wu Y, Gao L, Zheng LA, Tian L, Wang Y, Li W, and Zheng Y

Abstract

Quantum entanglement is an important pillar of quantum information processing. In addition to the entanglement degree, the bandwidth of entangled states becomes another focus of quantum communication. Here, by virtue of a broadband frequency-dependent beam splitter, we experimentally demonstrate six pairs of independent entangled sideband modes with maximum entanglement degree of 8.1 dB. Utilizing a time delay compensation scheme, the bandwidth of independent entangled sideband modes is expanded to dozens of megahertz. This work provides a valuable resource to implement efficient quantum information processing.

Published
2023
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