Polaritonic frequency-comb generation and breather propagation in a negative-index metamaterial with a cold four-level atomic medium

被引:18
作者
Asgarnezhad-Zorgabad, Saeid [1 ,2 ]
Berini, Pierre [3 ,4 ,5 ]
Sanders, Barry C. [2 ,6 ]
机构
[1] Sharif Univ Technol, Dept Phys, Tehran 1136511155, Iran
[2] Univ Calgary, Inst Quantum Sci & Technol, Calgary, AB T2N 1N4, Canada
[3] Univ Ottawa, Dept Phys, 150 Louis Pasteur, Ottawa, ON K1N 6N5, Canada
[4] Univ Ottawa, Ctr Res Photon, 25 Templeton St, Ottawa, ON K1N 6N5, Canada
[5] Sch Elect Engn & Comp Sci, 700 King Edward St, Ottawa, ON K1N 6N5, Canada
[6] Canadian Inst Adv Res, Program Quantum Informat Sci, Toronto, ON M5G 1M1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
MODULATION;
D O I
10.1103/PhysRevA.99.051802
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We develop a concept for a waveguide that exploits spatial control of nonlinear surface-polaritonic waves. Our scheme includes an optical cavity with four-level N-type atoms in a lossless dielectric placed above a negative-index metamaterial layer. We propose exciting a polaritonic Akhmediev breather at a certain position of the interface between the atomic medium and the metamaterial by modifying laser-field intensities and detunings. Furthermore, we propose generating position-dependent polaritonic frequency combs by engineering widths of the electromagnetically induced transparency window commensurate with the surface-polaritonic modulation instability. Therefore, this waveguide acts as a high-speed polaritonic modulator and position-dependent frequency-comb generator, which can be applied to compact photonic chips.
引用
收藏
页数:5
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