Distribution and monogamy of quantum coherence for open three-qubit systems under local noisy channels

Abstract

Abstract We study the distribution and monogamous relations of quantum coherence for three-qubit systems under the influence of local amplitude-damping, phase-damping and random unitary channels, respectively. We find that under the influence of the considered channels, the W state has both global and bipartite coherence, and its monogamy is always equal to zero. For the Greenberger–Horne–Zeilinger) state, however, there is only global coherence in the time evolution and the monogamy is always positive. We also present a partially entangled state, | Ψ ⟩ , which has global, bipartite, and monomeric coherences and negative monogamy during the whole time evolution.