title: Sub-kBT micro-electromechanical irreversible logic gate.
abstract: In modern computers, computation is performed by assembling together sets of logic gates. Popular gates like AND, OR and XOR, processing two logic inputs and yielding one logic output, are often addressed as irreversible logic gates, where the sole knowledge of the output logic value is not sufficient to infer the logic value of the two inputs. Such gates are usually believed to be bounded to dissipate a finite minimum amount of energy determined by the input-output information difference. Here we show that this is not necessarily the case, by presenting an experiment where a OR logic gate, realized with a micro-electromechanical cantilever, is operated with energy well below the expected limit, provided the operation is slow enough and frictional phenomena are properly addressed.
authors.affiliation: NiPS Laboratory, Dipartimento di Fisica e Geologia, Università degli Studi di Perugia-via Pascoli, I-06123 Perugia, Italy.
authors.forename: M
authors.initials: M
authors.lastname: López-Suárez
authors.affiliation: NiPS Laboratory, Dipartimento di Fisica e Geologia, Università degli Studi di Perugia-via Pascoli, I-06123 Perugia, Italy.|INFN Sezione di Perugia-via Pascoli, I-06123 Perugia, Italy.
authors.forename: I
authors.identifier: 0000-0002-9047-9822
authors.initials: I
authors.lastname: Neri
authors.affiliation: NiPS Laboratory, Dipartimento di Fisica e Geologia, Università degli Studi di Perugia-via Pascoli, I-06123 Perugia, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Gammaitoni