Cited by 132Advanced Thermodynamics and Statistical MechanicsQuantum Information and CryptographyQuantum Mechanics and Applications

Experimental demonstration of information to energy conversion in a quantum system at the Landauer limit

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Peterson, J. P. S., Sarthour, R. S., Souza, A. M., Oliveira, I. S., Goold, J., Modi, K., Soares-Pinto, D. O., Céleri, L. C.·2016·Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences

Abstract

Landauer’s principle sets fundamental thermodynamical constraints for classical and quantum information processing, thus affecting not only various branches of physics, but also of computer science and engineering. Despite its importance, this principle was only recently experimentally considered for classical systems. Here we employ a nuclear magnetic resonance set-up to experimentally address the information to energy conversion in a quantum system. Specifically, we consider a three nuclear spins S = 1 2 (qubits) molecule—the system, the reservoir and the ancilla—to measure the heat dissipated during the implementation of a global system–reservoir unitary interaction that changes the information content of the system. By employing an interferometric technique, we were able to reconstruct the heat distribution associated with the unitary interaction. Then, through quantum state tomography, we measured the relative change in the entropy of the system. In this way, we were able to verify that an operation that changes the information content of the system must necessarily generate heat in the reservoir, exactly as predicted by Landauer’s principle. The scheme presented here allows for the detailed study of irreversible entropy production in quantum information processors.

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  1. [31]Oliveira IS, Bonagamba TJ, Sarthour RS, Freitas JCC, de Azevedo RR. 2007 NMRquantum information processing . Amsterdam: Elsevier.

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Authors
Peterson, J. P. S., Sarthour, R. S., Souza, A. M., Oliveira, I. S., Goold, J., Modi, K., Soares-Pinto, D. O., & Céleri, L. C.
Affiliations
  • Centro Brasileiro de Pesquisas Físicas (BR)
  • The Abdus Salam International Centre for Theoretical Physics (ICTP) (IT)
  • Monash University (AU)
  • Universidade de São Paulo (BR)
  • Universidade Federal de Goiás (BR)
Venue
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Published
2016-04
Volume
472
Issue
2188
Pages
20150813
ISSN
  • 1364-5021 (ISSN-L)
  • 1471-2946
OpenAlex
W1544094034
Cited by
132
References
43
Citations by year
2026: 2 · 2025: 6 · 2024: 9 · 2023: 12 · 2022: 22 · 2021: 15 · 2020: 13 · 2019: 8 · 2018: 13 · 2017: 19 · 2016: 10 · 2015: 1 · 2013: 2
FWCI
9.33
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the Royal Society A Mathematical Physical and Engineering Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Funders
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
  • COST Action MP1209
  • Fundação Estadual de Amparo à Pesquisa do Rio de Janeiro
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico
Topics
  • Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Advanced Thermodynamics and Statistical Mechanics
  • Physical Sciences › Computer Science › Artificial Intelligence › Quantum Information and Cryptography
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Mechanics and Applications
Keywords
Landauer's principle, information-to-energy conversion, quantum thermodynamics, heat dissipation, irreversible entropy production, nuclear spin qubits, system-reservoir interaction, quantum state tomography, nuclear magnetic resonance

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