Absorptive central line-shapes of a driven atom in a squeezed reservoir

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• 作者：R.A. Alharbey^a ; ^{rania.math@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; L.A.M. Nejad^b ; ^{l.nejad@mmu.ac.uk" class="auth_mail" title="E-mail the corresponding author} ; S.S. Hassan^c ; ^b ; ^{shoukryhassan@hotmail.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Squeezed vacuum ; Mono- and bi-chromatic driving fields ; Absorption line-shapes ; Harmonics
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：127
• 期：13
• 页码：5264-5269
• 全文大小：628 K

文摘

Amplification of absorption spectrum of a weak signal probing the system of a dissipative single 2-level atom in the presence of a broadband squeezed vacuum (SV) reservoir and driven by a non-resonant mono- or bi-chromatic coherent field is investigated. The non-autonomous model Bloch equations yields solutions for the atomic variables of all harmonic frequency components, exp(±inνt); n = 0, 1, … where ν is the probe frequency detuning. Amplification of the fundamental (n = 0) and the first harmonic (n = 1) frequency components associated with the central part (|ν| < 1) of the spectrum is shown with: (i) simultaneous change of atomic and probe frequency detunings, and (ii) change of SV phase and photon number parameters.