Abstract
We show how communication without a physical system carrying the information from the sender to the receiver can be realized. The main point is that sending the vacuum state is not nothing. This extends the recent work by Salih et al. [Phys. Rev. Lett. 110, 170502 (2013)].
- Received 22 May 2013
DOI:https://doi.org/10.1103/PhysRevA.88.030301
©2013 American Physical Society