Zeno-Assisted Quantum Heat Engines
Abstract
Finite-time quantum heat engines (QHEs) typically extract less work than their quasistatic counterparts because fast driving generates coherences and non-adiabatic transitions during the work strokes, a phenomenon commonly referred to as quantum friction. Quantum lubrication denotes a broad class of strategies that use auxiliary systems or controls to mitigate this loss. In this work, we introduce a lubrication protocol based on the quantum Zeno dynamics (QZD). By coupling the working medium to an auxiliary lubricant system and frequently monitoring the lubricant, we confine the joint evolution to a Zeno subspace and obtain an effective shortcut to adiabaticity during the work strokes of a QHE running an Otto cycle. In the ideal Zeno limit, the protocol reproduces the transitionless dynamics required to preserve populations in the instantaneous energy basis and recover the Otto efficiency at finite stroke duration. We also analyze several implementation-dependent thermodynamic costs, including switching, driving, monitoring, and imperfect thermalization, in order to assess how these costs constrain the practical gains in efficiency and power. Our results identify QZD as a conceptually distinct route to quantum lubrication and highlight quantum heat engines as a useful setting in which to study the interplay between strong coupling, measurement, and quantum thermodynamic control.
Related
- Efficiency fluctuations in quantum heat engines with non-quasi-static adiabatic strokes
- Universal splitting of nonequilibrium phase transitions in driven Potts heat engines
- Achieving Heisenberg limit under noisy conditions with quantum Zeno dynamics and dynamical decoupling
- Bounds and sufficient conditions in quantum Zeno effect
- Latent Symmetry in Quantum Zeno Dynamics
BibTeX
@misc{memic2026zenoassisted,
title = {{Zeno-Assisted Quantum Heat Engines}},
author = {Selma Memić and Rafael Wagner and Susana F. Huelga and Martin B. Plenio},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2605.18367},
eprint = {2605.18367},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2605.18367},
}
RIS
TY - UNPB
TI - Zeno-Assisted Quantum Heat Engines
AU - Selma Memić
AU - Rafael Wagner
AU - Susana F. Huelga
AU - Martin B. Plenio
PY - 2026
DA - 2026/09/14
PB - arXiv
DO - 10.48550/arxiv.2605.18367
UR - https://arxiv.org/abs/2605.18367
AB - Finite-time quantum heat engines (QHEs) typically extract less work than their quasistatic counterparts because fast driving generates coherences and non-adiabatic transitions during the work strokes, a phenomenon commonly referred to as quantum friction. Quantum lubrication denotes a broad class of strategies that use auxiliary systems or controls to mitigate this loss. In this work, we introduce a lubrication protocol based on the quantum Zeno dynamics (QZD). By coupling the working medium to an auxiliary lubricant system and frequently monitoring the lubricant, we confine the joint evolution to a Zeno subspace and obtain an effective shortcut to adiabaticity during the work strokes of a QHE running an Otto cycle. In the ideal Zeno limit, the protocol reproduces the transitionless dynamics required to preserve populations in the instantaneous energy basis and recover the Otto efficiency at finite stroke duration. We also analyze several implementation-dependent thermodynamic costs, including switching, driving, monitoring, and imperfect thermalization, in order to assess how these costs constrain the practical gains in efficiency and power. Our results identify QZD as a conceptually distinct route to quantum lubrication and highlight quantum heat engines as a useful setting in which to study the interplay between strong coupling, measurement, and quantum thermodynamic control.
ER -