visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2024-12-06 16:00 
연사 Vladimir Y. Chernyak 
장소 E6-2 #1323 

 

세미나/특강명 

Bright Squeezed Light (BSL) Spectroscopy 

with Interferometry from First Principles

연사명

Vladimir Y. Chernyak

소속기관 

및 직위

Professor,

Department of Chemistry, Wayne State University

개최 일시

Dec 6, 2024 (Fri), 4:00 PM

개최 장소

E6-2 #1323

 
Abstract: 
 We present a theoretical approach that allows understanding the quantum light spectroscopy and interpretation of experimental data from first principles and discuss the main theoretical physics concepts and tools that stand behind it. The latter include (i) Hamiltonian vs Lagrangian picture in classical and quantum mechanics, (ii) Second quantization, (iii) Feynman path integral, (iv) Reduced description and effective action, and (v) Gauge invariance and generalized effective action. The theoretical approach is based on (i) quantum dynamics in Liouville space of mixed states, (ii) Computing the optical signals directly using the many-body Green function techniques, and (iii) Describing the classical light sources/lasers via classical external polarization, rather than a classical driving field produced by the lasers.
 
 Quantum light nonlinear spectroscopic techniques are attributed to the Liouville space Feynman diagrams that label perturbative contributions to the signals, associated with different dynamical processes in a system under spectroscopic study. Due to optical nonlinearity in an auxiliary system, e.g., in a parametric down conversion (PDC) crystal light, produced by a laser shows quantum properties, despite containing a macroscopic number of photons. Quantum features of light, appearing in such spectroscopies, are attributed to loops in Feynman diagrams that describe the corresponding signals. Applications are made to nonlinear response of photosynthetic excitons and difference-frequency-generation spectroscopy.
 
Contact.  안드레이모스칼렌코 교수 (moskalenko@kaist.ac.kr)
 
번호 날짜 연사 제목
공지 2025-02-11 12:00    물리학과 Seminar, Colloquium, 특강 홍보 요청 절차 안내
350 2019-05-31 11:00    Cavity QED with Spin Qubits file
349 2022-05-27 11:00    Current Status and Future Plans of ADMX file
348 2015-07-23 13:30    Enhanced ZnO based UV photonics and related applications file
347 2020-10-15 16:00    Graphene-based Josephson junction microwave bolometer file
346 2022-06-03 11:00    (응집물리 세미나) Theoretical Investigation of Exotic Quantum States in Low-dimensional Materials
345 2023-03-27 15:00    A coherent mechanical oscillator pumped by a suspended quantum dot file
344 2022-09-21 16:00    Materials and Device Nanofabrication of Optical Metasurfaces file
343 2023-11-01 16:00    [High Energy Theory Seminar] Modular functions and 3D N=4 rank-zero superconformal field theories
342 2019-02-21 16:00    B-meson charged current anomalies - Theoretical status file
341 2023-03-30 16:00    Detecting axions with chiral magnetic effects file
340 2019-09-18 16:00    Fall 2019: Physics Seminar Serises file
339 2016-03-07 16:00    Physics Colloquium : 2016 Spring file
338 2023-11-15 16:00    Quantum hydrodynamic theory for plasmonics: from molecule-coupling to nonlinear optics
337 2022-10-04 16:00    Distinguishing 6d (1, 0) SCFTs
336 2015-03-04 12:00    Bioimaging and Biosensing Using Near-Infrared Fluorescence file
335 2019-05-03 11:00    Exotic Magnetism file
334 2014-12-22 14:00    Dynamics of molecular motors: Power stroke vs Brownian ratchet file
333 2019-05-30 16:00    Tuning the excitonic properties of semiconductors with light-matter interactions file
332 2023-10-11 16:00    [CAPP seminar] Particle Physics with Neutrinos file
331 2018-07-09 14:00    The principles of collective learning file