I just skimmed the article again to confirm it doesn't address this, so help me out here...

My rudimentary understanding of quantum entanglement is that the two particles behave identically--what happens to one "happens" to the other (or it manifests the same symptoms of having been perturbed as its twin...this quantum stuff gets tricky to talk about in words).

The idea here is to excite cesium ions on Earth so that their entangled twins aboard the spacecraft also become excited and produce thrust as they're expelled from the nozzle. Energy is injected into the cesium...and where does it go?

Does 50% show up at the spacecraft and 50% remain in the Earthbound cesium, conserving system energy?

Does 100% show up at the spacecraft? (The energy is literally teleported, and the total remains the same)

Does 100% show up both places, thus creating energy from nothing?

The second possibility seems unlikely, since it's asymmetrical and that seems to contradict my understanding of entanglement (which could be wrong). The first possibility seems straightforward, and suggests the possibility of using quantum entanglement for refrigeration--dump your excess energy out in space. But the third possibility seems to violate all sorts of sacred tenets of physics.

What's up with that?