Article (Scientific journals)
A Probabilistic Finite State Logic Machine Realized Experimentally on a Single Dopant Atom
Fresch, Barbara; Bocquel, Juanita; Rogge, Sven et al.
2017In Nano Letters, 17, p. 1846
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Keywords :
Molecular logic; Probabilitic computing; Single atom transistor
Abstract :
[en] Exploiting the potential of nanoscale devices for logic processing requires the implementation of computing functionalities departing from the conventional switching paradigm. We report on the design and the experimental realisation of a probabilistic finite state machine in a single phosphorus donor atom placed in a silicon matrix electrically addressed and probed by Scanning Tunneling Spectroscopy (STS). The single atom logic unit simulates the flow of visitors in a maze whose topology is determined by the dynamics of the electronic transport through the states of the dopant. By considering the simplest case of a unique charge state for which three electronic states can be resolved, we demonstrate an efficient solution of the following problem: in a maze of four connected rooms, what is the optimal combination of door opening rates in order to maximize the time that visitors spend in one specific chamber? The implementation takes advantage of the stochastic nature of electron tunneling while the output remains the macroscopic current whose reading can be realized with standard techniques and does not require single electron sensitivity.
Research center :
Chimie Physique Théorique
Disciplines :
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Fresch, Barbara;  University of Padova > Chemistry
Bocquel, Juanita;  University of New South Wales > School of Physics
Rogge, Sven;  University of New South Wales > Schoolf of Physics
Levine, Raphaël David;  Hebew University of Jerusalem > Institute of Chemistry
Remacle, Françoise  ;  Université de Liège > Département de chimie (sciences) > Laboratoire de chimie physique théorique
Language :
English
Title :
A Probabilistic Finite State Logic Machine Realized Experimentally on a Single Dopant Atom
Publication date :
2017
Journal title :
Nano Letters
ISSN :
1530-6984
eISSN :
1530-6992
Publisher :
ACS
Volume :
17
Pages :
1846
Peer reviewed :
Peer Reviewed verified by ORBi
European Projects :
FP7 - 317707 - MULTI - MULTI-valued and parallel molecular logic
Name of the research project :
Multi valued and parallel molecular logic
Funders :
DG RDT - Commission Européenne. Direction Générale de la Recherche et de l'Innovation [BE]
CE - Commission Européenne [BE]
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