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New paper from NiPS: Landauer bound for analog computing systems




Landauer bound for analog computing systems M. Cristina Diamantini, Luca Gammaitoni, and Carlo A. Trugenberger Phys. Rev. E 94, 012139 – Published 25 July 2016

New paper from NiPS prove false a long believed true theory

London, 28th June 2016


Published today on Nature Communications the results of an experiment at NiPS Lab, in Perugia, Italy. They show that irreversible logic gates can be operated below the Landauer’s limit.


New paper from the Landauer project on the cover of Nanotechnology



Perugia, 15 June, 2016

A novel paper by P Pfeffer, F Hartmann, I Neri, A Schade, M Emmerling, M Kamp, L Gammaitoni, S Höfling and L Worschech entitled "Half adder capabilities of a coupled quantum dot device” is on the cover of Nanotechnology, Volume 27, Number 21.

The paper is the product of a collaboration between the Wuerzburg Group and NiPS, in the framework of the Landauer project (

The abstract of the paper: 

In this paper we demonstrate two realizations of a half adder based on a voltage-rectifying mechanism involving two Coulomb-coupled quantum dots. First, we examine the ranges of operation of the half adder's individual elements, the AND and XOR gates, for a single rectifying device. It allows a switching between the two gates by a control voltage and thus enables a clocked half adder operation. The logic gates are shown to be reliably operative in a broad noise amplitude range with negligible error probabilities. Subsequently, we study the implementation of the half adder in a combined double-device consisting of two individually tunable rectifiers. We show that this double device allows a simultaneous operation of both relevant gates at once. The presented devices draw their power solely from electronic fluctuations and are therefore an advancement in the field of energy efficient and autonomous electronics.





Stochastic Resonance review paper hits 5,000 citations on Google Scholar


The phenomenon of Stochastic Resonance, proposed for the first time in 1981 (R. Benzi, S, Sutera, A. Vulpiani, J. Phys. A 14, L453, 1981; C. Nicolis, G. Nicolis, Tellus 33, 225, 1981) has attracted continuous attention in the last 30 years. Most of its fortune among scientists and the public at large is due to its counter-intuitive characteristic: given a non-linear dynamic system, the degree of order in its behavior can be increased simply by injecting more noise, i.e. increasing the disorder. Clearly what triggered researchers’ curiosity the most was the suggestion that noise, often considered a nuisance of small influence, can play instead a very significant role with potential applications to biological systems and technological devices.
In 1998 an international team of scientists wrote the most comprehensive and, to date, the most appreciated review article to describe this phenomenon:
Title: Stochastic resonance
Journal: REVIEWS OF MODERN PHYSICS Volume: 70 Issue: 1 Pages: 223-287 Published: 1998
Since then the review article has grown to become a highly cited paper that has recently reached 5,000 citations on Google Scholar (3,745 on ISI).
Statistics available at:

Fernando Gonzales Zalba, from Hitachi Cambridge visits NiPS



Perugia, May 11-13, 2016
Dr. Fernando Gonzalez-Zalba Senior Research Scientist Hitachi Cambridge Laboratory, Cambridge, visited NiPS Laboratory for planning future collaborations.
On Wednesday May 11, at 15:00, Dr. Gonzalez-Zalba presented a public seminar on 
Towards quantum computing using silicon-on-insulator transistor technology
Silicon complementary metal oxide semiconductor (CMOS) technology has driven the
success of the semiconductor industry in the last few decades. The classical computational
power has increased exponentially but this progress is bound to reach its fundamental limits
in the next years. We are now starting to see that CMOS technology itself can offer an
alternative to overcome its classical fundamental limits, not in
ation. A quantum computer promises to be exponentially more efficient than classical
computers in solving a specific set of problems, such as database searches and prime
number factorization.

Vivere e sopravvivere nell'entropia



Perugia, April 20, 2016


L. Gammaitoni speaks at the conference "Vivere e sopravvivere nell'entropia" with a talk on "Energia ed Entropia: la strana coppia".

During the event the book "Sporco Mondo" by Franco Vennati will be presented and discussed.


Organization by:

Associazione culturale "Luigi Bonazzi" e Università di Perugia

Comune di Perugia - Infn

Forti, "Promuovere i talenti, far crescere l’eccellenza"

Al chiostro di San Mercuriale la mostra "Maria Sklodowska Curie. Ovunque la prima" Eventi a Forlì


Giovedì 28 Aprile, alle ore 18.30, al Circolo La Scranna di corso Garibaldi n.80 si terrà il convegno “Promuovere i talenti, far crescere l’eccellenza” con la partecipazione di Luca Gammaitoni, Direttore NIPS Laboratory, dipartimento di Fisica dell’Università degli studi di Perugia e Sara Bravaccini, ricercatrice oncologica. Introdurrà Pier Luigi Consorti. Parteciperà l’Assessore comunale di Forlì Raoul Mosconi.

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international ONRG project workshop

Perugia, 12 April 2016


Novel techniques for the realization of energy harvesting systems

capable of substituting/integrating existing batteries

for the powering of autonomous electronic devices.


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"CLICK 4 ENERGY" Photo contest

Perugia, March 23rd


NiPS Laboratory, together with Giovanna Griffo - MaxArtis organizes the "CLICK 4 ENERGY" photo contest.
Participation is open to all the interested photo artists (> 18 years old).
Please connect to "" to know more.

This initiative is part of the dissemination activities of the ICT-Energy Coordination Action (FET Proactive - Project number 611004).