• 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

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]. 



 [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
459 2015-10-14 18:00  KAIST Munji Campus Supex Hall  인터스텔라 영화 속의 물리 file
458 2017-07-10 16:00  Jul. 10th (Mon), 4pm  “Intertwined Orders in a Heavy-fermion metal” file
457 2017-04-06 16:00  IBS CAPP seminar room, Creation Hall (3F), KAIST Munji Campus  For whom the Belle tolls
456 2020-10-16 14:30  Nanoscale magnetic resonance detection towards nano MRI file
455 2020-10-16 16:00  Hidden room-temperature ferroelectricity in CaTiO3 revealed by a metastable octahedral rotation pattern file
454 2020-10-09 09:00  Quantum Many-Body Simulation file
453 2020-10-15 17:00  Time crystals, quasicrystals, and time crystal dynamics in the superfluid universe file
452 2016-05-13 16:00  E6. #1501(1st fl.)  Graphene analogue in (111)- BaBiO3 bilayer heterostructures for topological electronics
451 2016-05-13 13:30  E6. #1501(1st fl.)  Aperiodic crystals in low dimensions
450 2018-06-22 10:00  E6-6, Lecture Room 119 (1F)  Success in Research Career file
449 2020-02-13 16:30  E6-6, #119  Enhanced Light-Matter Interactions in Graphene with Noble Metal Plasmonic Structures file
448 2023-06-23 11:00  E6-6, #119  Visualizing orbital quantum phenomena at room temperature
» 2023-11-15 16:00  E6-6, #119  Quantum hydrodynamic theory for plasmonics: from molecule-coupling to nonlinear optics
446 2023-05-22 13:00  E6-6 119  Design & Development of Electrochemical Biosensors for the Detection of T2DM Biomarkers
445 2023-06-30 11:00  E6-6 #1501  The Dual Mode Quantum Computer file
444 2022-08-17 11:00  E6-6 #118호  Robust Hamiltonian Engineering of Large Quantum Systems (큰 양자시스템의 견고한 해밀토니안 엔지니어링)
443 2022-12-20 16:00  E6-2.1st fl. #1323 & zoom  Studying Baryonic Flow Across the Cosmic Scales Using Radio and Millimeter Wavelength Experiments
442 2016-04-08 16:00  E6-2. 5st fl. #1501  Spectroscopic studies of iron-based superconductors : what have we learned?
441 2018-09-04 14:30  E6-2. 2st fl. #2502  Ultrafast time- and angle-resolved photoemission spectroscopy (tr-ARPES) with extreme ultraviolet laser pulses file
440 2019-05-03 11:00  E6-2. 2st fl. #2502  Exotic Magnetism file