  Introduced below is a quantum database method, not only for retrieval but
also for creation. It uses a particular structure of true's and false's in a
state vector of n qubits, permitting up to 2**2**n words, vastly more than for
classical bits. Several copies are produced so that later they can be
destructively observed and a word determined with high probability. Grover's
algorithm is proposed below to read out, nondestructively the unknown contents
of a given stored state vector using only one state vector.
