Estimation on Geometric Measure of Quantum Coherence*
Hai-Jun 海军 Zhang 张, Bin 斌 Chen 陈, Ming 明 Li 李, Shao-Ming 少明 Fei 费, Gui-Lu 桂鲁 Long 龙 · Communications in Theoretical Physics · 2017
We study the geometric measure of quantum coherence recently proposed in [Phys. Rev. Lett. 115 (2015) 020403]. Both lower and upper bounds of this measure are provided. These bounds are shown to be tight for a class of important coherent states — maximally coherent mixed states. The trade-off relation between quantum coherence and mixedness for this measure is also discussed.