Entangled particles is not very efficient in transmitting information. So, that path is really a dead end.

But, here is what you need. A magnetic jar and a way of selecting and handling one atom.
One way is to get a hydrogen atom and then give it enough energy so it splits in two. Then you got to get them to two separate places.

Currently they are just things that quantum physicists play with.

Fortunately, we had some helpful aliens try to tell us about an intergalactic transmitter.

We sent out a message into space
and then we got a reply in a crop circle. The Arecibo answer

http://www.cropcircleconnector.com/anasazi/fringe2014t.html

When we sent out the message, we showed our transmitter.
In their reply, they showed their transmitter.

Fortunately, the next year, the send an enhanced version of their transmitter.

This thing works via the structure of the aether.

Of course, modern materialistic science says the aether doesn't exist, so we have not done much research into its form and response.

Now another piece is that Tesla's tower was also going to transmit information around the world. This is a different technology that relies on the earth's... i don't know what you would call it, but its capacitance structure. You vibrate this structure... the structure is the carrier wave, and it goes all around the earth.