The QECs are interesting. If they actually existed, here's how I forsee their deployment:
A central communications station would be setup in a safe place (ex. Earth, AT&T). For each QEC resonating pair, one of the QECs would be housed at AT&T. The other is installed on a ship or at a planet's local AT&T office.
The QECs are connected to computers. At the colony, if you want to send an email or file off-world, you set the TO address to somebody "off-world" and hit send on your PC. Your PC sees the address is not "local" and routes it to the local AT&T office.
the colonial AT&T gets it, and sends it to the central AT&T router (back on Earth). Earth AT&T recieves it, sees it is for the Artemis and sends it out through their Artemis QEC counterpart. Artemis's computer recieves it, and routes it to the Communications Officer who opens it and annouunces that ColonyX is under attack.
The Artemis most definitely will not be carrying a QEC for ColonyX or even DS1 (barring initial transport for installation). That would create an unmanageable mess of routing and dependencies.
AT&T may not literally house all the QECs in one building. But they will have their halves interconnected so messages from pair 123 can be passed through to their destination on pair 456.
Some constraints to put on this:
odds are good, QECs are made by atom smashing rigs like the Large Hadron Collider, and they get one pair once in every X attempts. So the design model I outline will work whether there's 15 total QECs in the universe or if there's one for every ship, planet and space station. the networking problem is no more complicated or less extensible than what we do in our homes to get online or at our large corporations to network every user. If you want the TSN to have some "dead spots" where they have to wait for a ship to deliver news, then make the creation of QECs both expensive and limited.
you can also constrain how much information is passed through the QEC. basically how big of a message or data can be sent. So even though the transmission is "automatic", that doesn't mean the connected computer can send or recieve data at light speeds. In real electronics, you have to detect the change in signal on the line. If that's too fast or fuzzy, you fail to recognize a 101 as being 101 and instead get 111 or 11. Additionally, only so much state info can be transmitted at once. Quantum state might let us get 32 states (which is like 4 bits of information if I guessed 2^4 right).
So you can fluff some fiction that this QEC can't be giving super-duper internet access to earth's porn library all the way on ColonyX. In fact, it could be so restrictive, that we can use it to send short text messages, or bursts of computer data so commanders can make decisions, but not remotely micro manage and control a ship or colony from Earth. This would further justify why the Artemis game only gives short text messages to the Comms officer.
[Last edited Jul 18, 2013 19:12:50]