visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2023-11-15 16:00 
연사  
장소 E6-6, #119 
물리학과에서는 아래와 같이 세미나를 개최하고자 하오니, 
관심있는 분들의 많은 참석 부탁드립니다.
 
Date: 16:00~18:00 PM, 15th Nov (Wed)
 
Place: E6-6, #119호
 
Speaker: Prof. Cristian Ciraci(Istituto Italiano di Tecnologia (IIT))
 
Title: Quantum hydrodynamic theory for plasmonics: from molecule-coupling to nonlinear optics
 
Abstract: 

Metals support surface plasmons at optical wavelengths and have the ability to localize light to sub-wavelength regions. Nano-gap plasmonic systems – in which two or more metallic nanoparticles are separated only few nanometers from each other by an insulating spacer – have been predicted to produce enormous field enhancements (as much as thousands of times that of the incident radiation). For the narrowest (< 1 nm) gaps, light can be so tightly confined that the nonlocality associated with the dielectric response of the metal and quantum effects can have a strong impact on the scattering properties of the system, placing strict bounds on the ultimate field enhancement [1]. A reliable way to theoretically describe and numerically model optical properties of plasmonic nanostructures with different length scales requires methods beyond classical electromagnetism. In this context, it becomes very important to develop simulation techniques to take into account quantum microscopic features at the scale of billions of atoms. A promising solution is given by the hydrodynamic theory, which takes into account the nonlocal behavior of the electron response by including the electron pressure and it can be generalized so that it can describe electron spill-out and tunneling effects [2, 3, 4]. This method allows to explore light-matter interactions in extreme scenarios in which microscopic features can strongly affect the macroscopic optical response. In this seminar, I will present the quantum hydrodynamic theory for plasmonics and will discuss some applications including, photon emission [5], strong-coupling [6] and nonlinear optics [7, 8]. 

 

 References

 [1] C. Cirac`ı, R. T. Hill, J. J. Mock, Y. A. Urzhumov, A. I. Fernandez-Dominguez, S. A. Maier, J. B. Pendry, A. Chilkoti, and D. R. Smith, “Probing the ultimate limits of plasmonic enhancement,” Science, vol. 337, no. 6098, pp. 1072 – 1074, 2012. 

 [2] C. Cirac`ı and F. D. Sala, “Quantum hydrodynamic theory for plasmonics: Impact of the electron density tail,” Physical Review B, vol. 93, no. 20, p. 205405, 2016. 

 [3] C. Cirac`ı, “Current-dependent potential for nonlocal absorption in quantum hydrodynamic theory,” Physical Review B, vol. 95, no. 24, p. 245434, 2017. 

 [4] H. M. Baghramyan, F. D. Sala, and C. Cristian, “Laplacian-Level Quantum Hydrodynamic Theory for Plasmonics,” Physical Review X, vol. 11, no. 1, p. 011049, 2021. 

 [5] H. M. Baghramyan and C. Cirac`ı, “Fluorescence quenching in plasmonic dimers due to electron tunneling,” Nanophotonics, vol. 11, no. 11, pp. 2473–2482, 2022.

 [6] C. Cirac`ı, R. Jurga, M. Khalid, and F. D. Sala, “Plasmonic quantum effects on single-emitter strong coupling,” Nanophotonics, vol. 8, no. 10, pp. 1821–1833, 2019. 

 [7] M. Khalid and C. Cirac`ı, “Enhancing second-harmonic generation with electron spill-out at metallic surfaces,” Communications Physics, vol. 3, no. 1, p. 214, 2020. 

 [8] F. De Luca and C. Cirac`ı, “Impact of Surface Charge Depletion on the Free Electron Nonlinear Response of Heavily Doped Semiconductors,” Physical Review Letters, vol. 129, no. 12, p. 123902, 2022.

 
번호 날짜 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
383 2019-04-11 16:00    Massive screening for cathode active materials using deep neural network file
382 2018-09-20 16:00    Toward Cancer Treatment Using Terahertz Radiation: Demethylation of Cancer DNA file
381 2018-09-20 16:00    Toward Cancer Treatment Using Terahertz Radiation: Demethylation of Cancer DNA file
380 2018-10-18 16:00    Applications of nonlinear optics for condensed matter researches file
379 2018-05-09 16:00    Recent advances in thermoelectric bulk composites file
378 2017-01-09 16:00    Topological Defects and Phase Transitions" file
377 2016-07-28 16:00    Low Dimensional Electrons: On the Road to Hybrid Quantum Systems
376 2019-04-23 16:00    From Mott physics to high-temperature superconductivity file
375 2022-07-21 16:00    Quintessential axions file
374 2019-11-14 16:00    Semi-classical model of polariton propagation file
373 2017-12-15 09:20    Workshop on Magnetism in Unconventional Superconductors 개최 file
372 2024-05-01 16:00    [High Energy Theory Seminar] Across the Mass Spectrum: Utilizing Small-Scale Structures to Probe Dark Matters
371 2019-11-07 16:00    Integrated quantum photonics with solid-state quantum emitters file
370 2018-05-29 16:00    Investigation on metal nanostructure/semiconductor junction and its applications file
369 2020-10-23 14:00    Plasmon spectroscopy of low-dimensional superconductors in fluctuating regime file
368 2025-02-25 14:00  Prof. Igor Di Marco  Dynamical mean-field theory for strongly correlated materials file
367 2024-05-16 16:00    [High Energy Theory Seminar] Conformal Collider Physics
366 2018-07-13 14:00    Loop Induced Single Top Partner Production and Decay at the LHC
365 2018-12-11 16:00    Natural compact representation of Matsubara Green’s functions: applications to analytic continuation and quantum many-body simulations file
364 2017-08-31 14:00    “Berry phase and nonlinear response: photocurrent in noncentrosymmetric insulators and Weyl semimetals” file