Вивчення населеності атомів, електромагнітноіндукованої прозорості і дисперсійних сигналів у системі λ-типу з різними ефектами декогерентності

Автор(и)

  • R. Hazra Department of Physics, Aliah University
  • Md.M. Hossain Department of Physics, Aliah University

DOI:

https://doi.org/10.15407/ujpe64.3.197

Ключові слова:

electromagnetically induced transparency, dispersion, decoherence, density matrix, lambda-type system

Анотація

Теоретично дослiдженi населеностi атомiв, електромагнiтноiндукована прозорiсть (ЕIП) i дисперсiя в трирiвневiй системi Λ-типу. Побудовано рiвняння для матрицi щiльностi з урахуванням релаксацiї в основному станi i вирiшенi рiвняння Блоха в наближеннi слабкого тестуючого поля. Для основного i збудженого станiв вивчено вплив декогерентностi на форму лiнiї при ЕIП i на дисперсiйнi сигнали. Знайдено, що ширина лiнiї при ЕIП збiльшується i висота пiка зменшується при зростаннi швидкостi декогерентностi. З iншого боку, при малих швидкостях декогерентностi дисперсiйнi сигнали крутiше i бiльше контрастнi в основному i збудженому станах. Проаналiзовано змiну населеностi рiвнiв енергiї атомiв при накачуваннi з частотою Рабi та швидкiсть декогерентностi в основному станi.

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Опубліковано

2019-04-01

Як цитувати

Hazra, R., & Hossain, M. (2019). Вивчення населеності атомів, електромагнітноіндукованої прозорості і дисперсійних сигналів у системі λ-типу з різними ефектами декогерентності. Український фізичний журнал, 64(3), 197. https://doi.org/10.15407/ujpe64.3.197

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Оптика, атоми і молекули