Coherently induced double photonic band gaps in a driven N-type atomic system

In an N-type atomic system with double electromagnetically induced transparency, when the traveling-wave coupling field is replaced by a standing-wave, double fully developed photonic band gaps open up due to space-modulated refractive index within the two electromagnetically induced transparency widows. The dynamically induced band gaps can be tuned coherently, and have applications in manipulating the propagation dynamics of light pulses.

Research Highlights
► An N-type atomic system is proposed to achieve double photonic band gaps.
► The dynamically induced photonic band gaps can be tuned coherently.
► It has applications in manipulating the propagation dynamics of light pulses.