Terahertz Pioneer: Jun-ichi Nishizawa “THz Shogun”

Siegel, Peter H.

doi:10.1109/tthz.2015.2399699

Cited by 2 publications

(1 citation statement)

References 116 publications

(86 reference statements)

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“…Recent advancements in Raman spectroscopy techniques have made it possible to measure the nuclear motions even in the low wavenumber region as well. [ 21 ] Another important progress in vibrational spectroscopy is a successful generation of terahertz (THz) radiation [ 22 ] consisting of electromagnetic waves. With the THz radiation, optical normal modes within the THz region (0.1–10 THz or 3–333 cm −1 ) can be excited by absorbing the photons.…”

Section: Introductionmentioning

confidence: 99%

A density functional theory study of van der Waals interaction in carbon nanotubes

Wang

Hayashi

2023

J Chinese Chemical Soc

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In this article, we investigate the effect of van der Waals force in zigzag carbon nanotubes (CNTs) including single-wall CNT (SWCNT) and double-walled CNT (DWCNT) structures with several interaction configurations. The solidstate density functional theory is employed to calculate the geometric optimization, normal mode frequencies, and IR and Raman spectra with the periodic boundary condition. For SWCNTs, we find that the Raman intensity is not affected by the tube diameter or the electronic structure. The IR absorption, however, increases with the tube diameter. We find that the close metallicity of the electronic structure has a significant impact on the IR simulations.When the van der Waals force is applied outside the CNTs at a distance longer than 3.0, the effect on Raman spectra is minimal but some effects can still be confirmed by IR absorption. When the van der Waals force acts inside the CNTs, the effect on the spectrum can be observed, especially at a distance of 2.8 Å, both IR and Raman can be significantly enhanced in many modes.

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Section: Introductionmentioning

confidence: 99%

A density functional theory study of van der Waals interaction in carbon nanotubes

Wang

Hayashi

2023

J Chinese Chemical Soc

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Single-Photon Detectors for Quantum Integrated Photonics

Dao,

Amanti,

Andrini

et al. 2024

Photonics

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Single-photon detectors have gained significant attention recently, driven by advancements in quantum information technology. Applications such as quantum key distribution, quantum cryptography, and quantum computation demand the ability to detect individual quanta of light and distinguish between single-photon states and multi-photon states, particularly when operating within waveguide systems. Although single-photon detector fabrication has been established for some time, integrating detectors with waveguides using new materials with suitable structural and electronic properties, especially at telecommunication wavelengths, creates more compact source-line-detector systems. This review explores the state of the art of single-photon detector research and examines the potential breakthroughs offered by novel low-dimensional materials in this field.

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Terahertz Pioneer: Jun-ichi Nishizawa “THz Shogun”

Cited by 2 publications

References 116 publications

A density functional theory study of van der Waals interaction in carbon nanotubes

A density functional theory study of van der Waals interaction in carbon nanotubes

Single-Photon Detectors for Quantum Integrated Photonics

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