Here's a possible method for faster than light communication:
Imagine two star systems (A and B) separated by a distance of 10 light years, with a laser beam splitter exactly half-way between them. The laser beam splitter creates two entangled beams of laser light (A and B), each headed toward one of the two star systems.
After 5 years, the entangled laser beams reach the two star systems. At each star system is a receiver for the entangled laser beams consisting of a double-slit detector. If the two entangled beams arrive at each star system undisturbed, they will both create an interference pattern on their respective double-slit detector. This is because the probabilistic wave function for the entangled beams has not collapsed.
If laser beam A is disturbed (i.e. observed) just before reaching its double-slit detector, then the wave function for that beam collapses, as does the wave function for laser beam B just before it reaches its detector. This happens instantaneously across the 10 light year distance. The consequence of this is that laser beam B will NOT create an interference pattern at its double-slit detector.
It’s not hard to imagine that one can create a pattern of disturbance on laser beam A that can be translated instantaneously to the detector of laser beam B simply by observing whether there is an interference pattern or not. If the beam is continuous you can send a message just by encoding binary over short time period "frames". Interference pattern during the frame = 0. No interference = 1. From there all the complexity of digital communication protocols can be layered on top of this simple transport mechanism. In this sense, faster-than-light communication can be achieved.
Follow this link for a more in-depth discussion and implications for space exploration:
http://www.seti.org.au/spacecom/quantumcom.html
