Amplitude and phase controlled absorption and dispersion of coherently driven five-level atom in double-band photonic crystal

• 来源期刊: 中国物理B（英文版）
• 关键词: isotropic photonic bandgap absorption–dispersion spectra phase and amplitude control ultranarrow spectral structure
• 年，卷（期）: 2019,（2）
• 页码范围: 237-242
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/28/2/024206

摘要

The absorption–dispersion properties of a microwave-driven five-level atom embedded in an isotropic photonic bandgap (PBG) have been studied. Due to the singular density of modes (DOM) in the isotropic PBG and the dynamically coherence induced by the coupling fields, modified reservoir-induced transparency and quantum interference-induced transparency emerge simultaneously. Their interaction leads to ultra-narrow spectral structure. As a result of closed-loop configuration, these features can be manipulated by the amplitudes and relative phase of the coherently driven fields. The position and width of PBG also have an influence on the spectra. The theoretical studies can provide us with more efficient methods to control the atomic absorption–dispersion properties, which have applications in optical switching and slow light.