A Possible New Quantum Algorithm: Arithmetic with Large Integers via the Chinese Remainder Theorem

Residue arithmetic is an elegant and convenient way of computing with integers that exceed the natural word size of a computer. The algorithms are highly parallel and hence naturally adapted to quantum computation. The process differs from most quantum algorithms currently under discussion in that the output would presumably be obtained by classical superposition of the output of many identical quantum systems, instead of by arranging for constructive interference in the wave function of a single quantum computer.