Computational complexity is a particularly important objective. The idea of Landauer principle was extended through mapping three classic problems (sorting、 ordered searching and max of N unordered numbers) into Maxwell demon thought experiment in this paper. The problems’ complexity is defined on the entropy basis and the minimum energy required to solve them are rigorous deduced from the pers...

We analyze the confinement of electronic surface states in a model topological insulator nanowire. Spin-momentum locking reduces unwanted backscattering presence nonmagnetic disorder and is known to counteract localization for certain values magnetic flux threading wire. show that intentional can be induced range conditions nanowire constriction. propose geometry involves two constrictions thes...

In a recent paper M. Lopez-Suarez, I. Neri, and L. Gammaitoni (LNG) present a concrete realization of the Boolean Or irreversible gate, but contrary to the standard Landauer principle, with an arbitrary small dissipation of energy. A Popperian good falsification! In this paper we discuss a theoretical description of the LNG gate which is indeed a 3in/3out self–reversible realization of the invo...