This invention is a truly random bit generator that harnesses the fundamental uncertainty of pure quantum superposition states to produce truly unpredictable bits.  Unlike other random bit generators that claim to use quantum states but actually use non-quantum methods in their devices, this invention takes full advantage of truly random quantum effects.  Furthermore, the probability of the bits can be controlled by the user, allowing full variation of the bit probability between 0 and 1, lockable at any value, and capable of variation over time.  This device has numerous applications ranging from cryptographic key generation to new and novel forms of computing and information exchange.