arXiv preprints at [0,1]. While interesting results, this is by no means groundbreaking work, and as long as we don’t understand the relation between gravity and quantum mechanics, it is impossible to draw conclusions regarding the sort-of-obvious FTL travel lurking here.
[0] http://arxiv.org/abs/1302.6165
[1] http://arxiv.org/abs/1301.3923