Implementation of a two-stroke quantum heat engine with a collisional model

Filipe V. Melo, Nahum Sá, Itzhak Roditi, Alexandre M. Souza, Ivan S. Oliveira, Roberto S. Sarthour, and Gabriel T. Landi
Phys. Rev. A 106, 032410 – Published 7 September 2022

Abstract

We put forth a quantum simulation of a stroboscopic two-stroke thermal engine in the IBM quantum (IBMQ) processor. The system consists of a quantum spin chain connected to two baths at their boundaries, prepared at different temperatures using the variational quantum thermalizer algorithm. The dynamics alternates between heat and work strokes, which can be separately designed using independent quantum circuits. The results show good agreement with theoretical predictions, showcasing IBMQ as a powerful tool to study thermodynamics in the quantum regime, as well as the implementation of variational quantum algorithms in real-world quantum computers. It also opens the possibility of simulating quantum heat transport across a broad range of chain geometries and interactions.

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  • Received 31 March 2022
  • Revised 15 June 2022
  • Accepted 29 August 2022

DOI:https://doi.org/10.1103/PhysRevA.106.032410

©2022 American Physical Society

Physics Subject Headings (PhySH)

General Physics

Authors & Affiliations

Filipe V. Melo, Nahum Sá, Itzhak Roditi, Alexandre M. Souza, Ivan S. Oliveira, and Roberto S. Sarthour

  • Centro Brasileiro de Pesquisas Físicas, 22290-180 Rio de Janeiro, Rio de Janeiro, Brazil

Gabriel T. Landi

  • Instituto de Física da Universidade de São Paulo, 05508-090 São Paulo, Brazil School of Physics, Trinity College Dublin, College Green, Dublin 2, Dublin D02 PN40, Ireland

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Vol. 106, Iss. 3 — September 2022

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