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 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
314 2020-12-23 10:00    Online workshop for Quantitative Phase Imaging file
313 2020-12-11 16:00    Atomic and electronic reconstruction at van der Waals interface in twisted 2D materials
312 2020-12-11 14:30    Antisymmetric interlayer exchange coupling in magnetic multilayers
311 2020-12-10 13:55    Consistency of Boltzmann equation and light dark matter from inflaton decay
310 2020-12-09 10:00    Searching for the QCD axion with the ARIADNE experiment file
309 2020-12-02 10:00    Recent progress in Axion Dark Matter eXperiment (ADMX) technology file
308 2020-11-26 16:00    2020 가을학기 광학분야 특별세미나(Light Engineering Beyond the Diffraction Limit)
307 2020-11-20 16:00    Coherent control of field gradient induced quantum dot spin qubits
306 2020-11-20 14:30    Lumpy Cooper pairs in an iron-based superconductor
305 2020-11-17 12:00    Quantum- & Nano-Photonics" 세미나 시리즈 file
304 2020-11-12 16:00    2020 가을학기 광학분야 특별세미나
303 2020-10-23 14:00    Plasmon spectroscopy of low-dimensional superconductors in fluctuating regime file
302 2020-10-16 16:00    Hidden room-temperature ferroelectricity in CaTiO3 revealed by a metastable octahedral rotation pattern file
301 2020-10-16 14:30    Nanoscale magnetic resonance detection towards nano MRI file
300 2020-10-15 17:00    Time crystals, quasicrystals, and time crystal dynamics in the superfluid universe file
299 2020-10-15 16:00    Graphene-based Josephson junction microwave bolometer file
298 2020-10-15 16:00    Towards resource-efficient and fault-tolerant quantum computation with nonclassical light
297 2020-10-09 09:00    Quantum Many-Body Simulation file
296 2020-09-28 17:30    KAIST Global Forum for Spin and Beyond(Fourth Forum) file
295 2020-09-24 09:00    (CAPP/IBS)Searching for Dark Matter with a Superconducting Qubit , Cryogenic Microwave Circuit Development at the NSTU file