Quantum advantage for probabilistic one-time programs

Autor: Marie-Christine Roehsner, Joshua A. Kettlewell, Tiago B. Batalhão, Joseph F. Fitzsimons, Philip Walther

Publikováno v: Nature Communications, Vol 9, Iss 1, Pp 1-8 (2018)

Information Theoretically-secure deterministic programs that self-destruct after a single use are known to be impossible to implement. Here, the authors use quantum states to implement a probabilistic version of this fundamental cryptographic primiti

Externí odkaz: https://doaj.org/article/b0ef5b745e5e4ff5b992c591831750c5

Reversing the direction of heat flow using quantum correlations

Autor: Kaonan, Micadei, John P S, Peterson, Alexandre M, Souza, Roberto S, Sarthour, Ivan S, Oliveira, Gabriel T, Landi, Tiago B, Batalhão, Roberto M, Serra, Eric, Lutz

Publikováno v: Nature Communications

Heat spontaneously flows from hot to cold in standard thermodynamics. However, the latter theory presupposes the absence of initial correlations between interacting systems. We here experimentally demonstrate the reversal of heat flow for two quantum

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::0ca5b09b4594c11ea0be369a162505ec
https://pubmed.ncbi.nlm.nih.gov/31165732

Experimental Rectification of Entropy Production by Maxwell’s Demon in a Quantum System

Autor: Roberto M. Serra, Roberto S. Sarthour, Patrice A. Camati, Kaonan Micadei, Alexandre M. Souza, John P. S. Peterson, Tiago B. Batalhão, Ivan S. Oliveira

Publikováno v: Physical Review Letters. 117

Maxwell's demon explores the role of information in physical processes. Employing information about microscopic degrees of freedom, this "intelligent observer" is capable of compensating entropy production (or extracting work), apparently challenging

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57a2789be300833d7be829aab216129f
https://doi.org/10.1103/physrevlett.117.240502

Tratamento algébrico e computacionalmente eficiente para a interação entre sistema e meio ambiente

Autor: Tiago B. Batalhão

Publikováno v: Biblioteca Digital de Teses e Dissertações da USP
Universidade de São Paulo (USP)
instacron:USP

Realizamos nesse trabalho um tratamento abrangente da interação entre um sistema quântico e o meio ambiente modelado como um conjunto de osciladores harmônicos. Partimos para isso de um tratamento prévio de redes de osciladores harmônicos quân

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0dfd1da5ab47c0c1b8c6ae9b344d730
https://doi.org/10.11606/d.76.2012.tde-23102012-091503

Experimental reconstruction of work distribution and study of fluctuation relations in a closed quantum system

Autor: Gabriele De Chiara, Ruben Auccaise, John Goold, Alexandre M. Souza, Laura Mazzola, Tiago B. Batalhão, Ivan S. Oliveira, Mauro Paternostro, Roberto M. Serra, Roberto S. Sarthour

Publikováno v: Batalhão, T B, Souza, A M, Mazzola, L, Auccaise, R, Sarthour, R S, Oliveira, I S, Goold, J, De Chiara, G, Paternostro, M & Serra, R M 2014, ' Experimental Reconstruction of Work Distribution and Study of Fluctuation Relations in a Closed Quantum System ', Physical Review Letters, vol. 113, no. 14, 140601 . https://doi.org/10.1103/PhysRevLett.113.140601

We report the experimental reconstruction of the nonequilibrium work probability distribution in a closed quantum system, and the study of the corresponding quantum fluctuation relations. The experiment uses a liquid-state nuclear magnetic resonance

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3c3758d82cf2859885201a7ffcedc55
https://pubmed.ncbi.nlm.nih.gov/25325627