Lifetime and Polarization for Real and Virtual Correlated Stokes-anti-Stokes Raman Scattering in Diamond
| Autor: | Ado Jorio, Filomeno S. de Aguiar Júnior, Carlos H. Monken, Marcelo França Santos |
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| Rok vydání: | 2020 |
| Předmět: |
Raman scattering
Phonon FOS: Physical sciences symbols.namesake Fônons Fock state Polarization Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Quantum information Physics::Chemical Physics Physics Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics Scattering Espalhamento Polarização Polarization (waves) symbols Phonons Cooper pair Atomic physics Raman spectroscopy Quantum Physics (quant-ph) Physics - Optics Optics (physics.optics) |
| Zdroj: | Repositório Institucional da UFMG Universidade Federal de Minas Gerais (UFMG) instacron:UFMG |
| DOI: | 10.48550/arxiv.2001.00422 |
| Popis: | CNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico INCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio) FAPERJ - Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro The production of correlated Stokes (S) and anti-Stokes (aS) photons (SaS process) mediated by real or virtual phonon exchange has been reported in many transparent materials. In this work, we investigate the polarization and time correlations of SaS photon pairs produced in a diamond sample. We demonstrate that both S and aS photons have mainly the same polarization of the excitation laser. We also perform a pump-and-probe experiment to measure the decay rate of the SaS pair production, evidencing the fundamental difference between the real and virtual (phonon exchange) processes. In real processes, the rate of SaS pair production is governed by the phonon lifetime of (2.8 ± 0.3) ps, while virtual processes only take place within the time width of the pump laser pulses of approximately 0.4 ps. We explain the difference between real and virtual SaS processes by a phenomenological model, based on the probabilities of phonon creation and decay. |
| Databáze: | OpenAIRE |
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