I am the captain of a spaceship at the moon of Tellus, and my colleague Trillian is the captain of another spaceship at Proxima Centauri. I need to deliver a package to Trillian, who is going to meet me half way between. The problem is, there is a space pirate ship, whose captain is also interested of the contents of the package.
Luckily, we have two different routes to select from. We have also two entangled particles, one for me and one for Trillian. We have agreed beforehand that the state 0 of my particle (meaning state 1 of Trillian's particle) will take us to the first route, and the opposite states will lead us to the second route. We have also agreed to measure the states with parallel detectors, I first, and Trillian (sufficient time considering relativity and other fancy stuff) after me.
Question 1: Will Trillian know immediately after her measurement, which route I shall take, provided she can trust me completely?
Question 2: Will I know Trillian's route before her measurement (after mine), provided I can trust she follows our procedure?
Question 3: Will pirates be able to capture this info mid-space?