Cyclic permutation-time symmetric structure with coupled gain-loss microcavities
Cyclic permutation-time symmetric structure with coupled gain-loss microcavities
We study the coupled even number of microcavities with the balanced gain and loss between any pair of their neighboring components. The effective non-Hermitian Hamiltonian for such a structure has the cyclic permutation-time symmetry with respect to the cavity modes, and this symmetry determines the patterns of the dynamical evolutions …