visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2023-11-15 16:00 
일시 16:00PM, 15th Nov (Wed) 
장소 E6-6, #119 
연사 Prof. Cristian Ciraci(Istituto Italiano di Tecnologia (IIT)) 
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 장소 제목
84 2018-07-27 13:30  #1323, E6-2  Magnetic reversal of artificial spin ice file
83 2018-07-27 13:30  #1323, E6-2  Magnetic reversal of artificial spin ice file
82 2018-05-29 16:00  #1323, E6-2  Investigation on metal nanostructure/semiconductor junction and its applications file
81 2018-09-05 16:00  #1323, E6-2  Shining a light on fractional excitations file
80 2018-06-22 16:00  #1323, E6-2  Tuning functional properties of BiFeO3 films using strain and growth chemistry file
79 2018-06-22 16:00  #1323, E6-2  Tuning functional properties of BiFeO3 films using strain and growth chemistry file
78 2019-12-05 16:00  #1323, E6-2  Subwavelenth Photonic Devices: From Single Photon Sources to Solar Cell file
77 2019-11-05 16:00  #1323, E6-2  Study on nanomaterials by the development of ultrahigh resolution laser-photoelectron microscopy (PEEM) file
76 2019-12-18 16:00  #1323, E6-2  Road to Higher Tc Superconductivity file
75 2019-11-14 16:00  #1323, E6-2  Semi-classical model of polariton propagation file
74 2019-11-28 16:00  #1323, E6-2  Generation of coherent EUV emissions using ultrashort laser pulses file
73 2019-11-07 16:00  #1323, E6-2  Integrated quantum photonics with solid-state quantum emitters file
72 2020-02-20 16:00  #1323, E6-2  Unconventional superconductivity in the locally non-centrosymmetric heavy-fermion CeRh2As2 file
71 2019-12-03 16:00  #1323, E6-2  Toward Quantum Materials with Correlated Oxides file
70 2018-10-18 10:00  #1323, E6-2  Understanding membrane protein folding using single-molecule force techniques file
69 2019-08-22 16:00  #1323, E6-2  Physics and Applications in Nanoelectronics and Nonomechanics file
68 2019-07-30 16:00  #1323, E6-2  Dirac fermions and flat bands in correlated kagome metals file
67 2019-06-04 17:00  #1323, E6-2  Stochastic nature of bacterial eradication using antibiotics file
66 2019-05-24 16:00  #1323, E6-2  Infrared spectroscopy study on metal-insulator transitions in layered perovskite iridates file
65 2019-05-09 16:00  #1323, E6-2  Quantum Optical Sensing Using Single Photons And Single Photon Emission from Single Emitters file