Optical Dark Resonance in multi-level systems(多準位系での光学暗共鳴)

Changbiao Li, Yanpeng Zhang, Zhiqiang Nie +6 more

K. C. Chen, C. M. L. Rittby

Kaixuan Zhou, June Wu, Junheng Shi +1 more

Abstract In a multi-level energy system with energy transitions, dark states are eigenstates of a Hamiltonian that consist entirely of ground states, with zero amplitude in the excited states. We present several criteria which allows one to deduce the presence of dark states in a general multi-level system based on the submatrices of the Hamiltonian. The dark states can be shown to be the right-singular vectors of the submatrix that connect the ground states to the excited states. Furthermore, we show a simple way of finding the dark state involving the determinant of a matrix constructed from the same submatrix.

Michał Berent

Wang, B, Han, Y, Wang, H +4 more

We present our experimental and theoretical studies of multi-dark-state resonances (MDSRs) generated in a unique cold rubidium atomic system with only one coupling laser beam. Such MDSRs are caused by different transition strengths of the strong coupling beam connecting different Zeeman sublevels. Controlling the transparency windows in such electromagnetically induced transparency system can have potential applications in multi-wavelength optical communication and quantum information processing.

Vladimir A. Sautenkov, Susanne F. Yelin