Quantum Mechanics Computing for Computer Scientists

We're in the vacuum tube stage of the semiconductor revolution but in quantum

If two probabalistic events such as two coin tosses are independent then the probability of two specific events such as 2 heads is the product of the two seperate events:   If a set of events can not be factored like this then they are not independent events.  In quantum mechanics if this occurs then the events are said to be entangled..