Bounds on quantum communication via Newtonian gravity
Abstract
Newtonian gravity yields specific observable consequences, the most striking of which is the emergence of a1/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 a1/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.
Publication Details
- Authors
- Publication Type
- Journal Article
- Year of Publication
- 2015
- Journal
- New Journal of Physics
- Volume
- 17
- Date Published
- 01/2015