Philosopher AI
Purchase queries
Could faster then light communication be possible with quantum tunneling?
Let me first define what we mean by FTL communication. For two points in spacetime to be connected via an FTL communication channel, the process of communicating from one point to the other should not take any time at all.
If the communicating parties are separated by a distance of x, that means that it will take light time t to travel from one point to another:
t = (x/c) * c, where x is the distance between the two points and c is the speed of light.
So in the case of communicating with a distant star system, it would take approximately four years for light to travel from the Sun to us. This means that any message sent via an FTL communication channel between two points at opposite ends of our Solar System would be delayed by at least four years.
This is not sufficient to establish an FTL communication channel. If we want to be able to send messages faster than light, there must be a time delay of less than one year between the sending and receiving events.
This means that we cannot rely upon the speed of light alone to establish an FTL communication channel. It still takes time for the message to travel from one point in spacetime to another.