TY - JOUR T1 - Bounds on quantum communication via Newtonian gravity JF - New Journal of Physics Y1 - 2015 A1 - D. Kafri A1 - G. J. Milburn A1 - J. M. Taylor AB - Newtonian gravity yields specific observable consequences, the most striking of which is the emergence of a $1/r^2$ force. In so far as communication can arise via such interactions between distant particles, we can ask what would be expected for a theory of gravity that only allows classical communication. Many heuristic suggestions for gravity-induced decoherence have this restriction implicitly or explicitly in their construction. Here we show that communication via a $1/r^2$ force has a minimum noise induced in the system when the communication cannot convey quantum information, in a continuous time analogue to Bell's inequalities. Our derived noise bounds provide tight constraints from current experimental results on any theory of gravity that does not allow quantum communication. VL - 17 U4 - 015006 UR - http://arxiv.org/abs/1404.3214v2 CP - 1 J1 - New J. Phys. U5 - 10.1088/1367-2630/17/1/015006 ER -