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December 9, 2019

A new experimental proof-of-concept quantum Otto cycle, using nuclear spins, has reached an efficiency close to its thermodynamic limit at maximum power.
The so-called quantum technology relies on microscopic devices that obey the laws of quantum mechanics. But how muc...

June 5, 2019

Irreversibility is a longstanding puzzle in physics. While microscopic laws of motion are invariant under time reversal, all macroscopic phenomena have a preferred direction in time. Heat, for instance, spontaneously flows from hot to cold. Eddington has called this as...

December 15, 2017

Dr  Tiago Batalhão (PhD student) was awarded the best thesis Grand Prize in Natural Sciences and Engineering 2017 afforded by CAPES and the Conrado Wessel Foundation (CWF). This is the most prestigious Brazilian Post-graduation Award. The prize includes a post-doctoral...

December 6, 2016

A new implementation of a Maxwell’s demon can control entropy production in a quantum-mechanical system that is driven out of thermal equilibrium. Maxwell’s demon explores the role of information in physical processes. Employing information about microscopic degrees of...

June 27, 2016

Entropy production, a quantity associated with the emergence of the arrow of time, has been successfully measured in a microscopic quantum system. Irreversibility is one of the most intriguing concepts in physics. While microscopic physical laws are perfectly reversibl...

June 26, 2016

Within the broad research scenario of quantum secure communication, two-way quantum-key-distribution (TWQKD) is a relatively new proposal for sharing secret keys that is not fully explored yet. We analyse the security of TWQKD schemes that use qubits prepared in non-or...

June 25, 2016

It is well known that a quantum correlated probe can yield better precision in estimating an unknown parameter than classically possible. However, how such a quantum probe should be measured remains somewhat elusive. We examine the role of measurements in quantum metro...

June 24, 2016

Highlighted as Editors’ Suggestion. Research on the out-of-equilibrium dynamics of quantum systems has so far produced important statements on the thermodynamics of small systems undergoing quantum mechanical evolutions. Key examples are provided by the Crooks and Jarz...

June 23, 2016

Our  former  PhD  student,  Dr  Jonas  Maziero  was  awarded a couple  of  prizes: (1) the best thesis Grand Prize in Natural Sciences and Engineering awarded by the Coordination for the Improvement of Higher Education Personnel (CAPES) and the Conrado Wessel Foundatio...

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@ Nature Communications: Reversion of heat flow using quantum correlations

June 5, 2019

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