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quant-ph2012★ 317 cited
Fisher information under decoherence in Bloch representation
Wei Zhong, Zhe Sun, Jian Ma +2
The dynamics of two variants of quantum Fisher information under decoherence are investigated from a geometrical point of view. We first derive the explicit formulas of these two q…
quant-ph2012★ 18 cited
Fisher information manifestation of dynamical stability and transition to self-trapping for Bose-Einstein condensates
Yixiao Huang, Wei Zhong, Zhe Sun +1
We investigate dynamical stability and self-trapping for Bose-Einstein condensates in a symmetric double well. The relation between the quantum Fisher information and the stability…