Niklas Johansson och Jan-Åke Larsson: Realization of Shor’s algorithm at Room Temperature

Abstract: 

Shor’s algorithm can find prime factors of a large number more efficiently than any known classical algorithm. Under- standing the properties that gives the speedup is essential for a general and scalable construction. Here we present a realization of Shor’s algorithm, that does not need any of the simplifications presently needed in current experiments and also gives smaller systematic errors than any former experimental implementation. Our realization is based on classical pass-transistor logic, runs at room temperature, and uses the same amount of resources as a scalable quantum computer. In this paper, the focus is not on the result of the factorization, but to compare our realization with current state-of-the-art experiment, factoring 15. Our result gives further insight to the resources needed for quantum computation, aiming for a true understanding of the subject.