Thermodynamic Performance of a Measurement-Driven Quantum Engine with a Two-Parameter $(p,q)$-Deformed Harmonic Oscillator

• URL: http://arxiv.org/abs/2609.06695v1
• Date: Sun, 06 Sep 2026 16:09:58 GMT
• Title: Thermodynamic Performance of a Measurement-Driven Quantum Engine with a Two-Parameter $(p,q)$-Deformed Harmonic Oscillator
• Abstract summary: We address a measurement-driven, single-bath quantum engine that generates usable work using quantum measurement backaction.<n>We derive the measurement heat, adiabatic work contributions, thermalization heat, and reduced working-medium efficiency.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We address a measurement-driven, single-bath quantum engine that generates usable work using quantum measurement backaction. The working medium is a two-parameter $(p,q)$-deformed harmonic oscillator, whose nonlinear spectrum modifies the energy gaps sampled by a nonselective Gaussian measurement and the work exchanged during quasistatic adiabatic strokes. The cycle starts from a Gibbs state and consists of an adiabatic change of $(ω,p,q)$, measurement of the final effective position quadrature, a reverse adiabatic stroke, and thermalization with the original bath. Using a consistent first-law convention, we derive the measurement heat, adiabatic work contributions, thermalization heat, and reduced working-medium efficiency. We also express the measurement stroke via a transition matrix and identify passivity/unitality conditions that ensure nonnegative measurement heat. Numerical scans show that, within the finite-basis, spectral-ordering, and engine-operation checks used in this work, deformation can enhance measurement-induced energy input and extracted work relative to the undeformed oscillator. The physical engine regime is selected by $\QM>0$, $\Wcyc<0$, $\QT<0$, and $0<η<1$. The reported efficiency is reduced and excludes measurement-apparatus costs.

Related papers

• Thermal screening and critical scaling of quantum energy teleportation in a harmonic chain [0.0]
  We develop a finite-temperature Gaussian-state formulation of quantum energy teleportation in the one-dimensional harmonic chain.<n>For Gibbs states, the optimized measurement-feedback protocol reduces to thermal two-point functions.<n>In the single-site protocol, the extracted energy is governed by a single correlator, which makes the thermodynamic and near-critical limits analytically tractable.
  arXiv  Detail & Related papers  (2026-09-01T08:51:41Z)
• Quantum Otto engine with field-decoupled idle levels in a non-Hermitian XY model [5.507929247179074]
  tuning the non-Hermitian parameter $_0$ drove a continuous transition from a dissipative regime to genuine heat-engine operation.<n>Non-Hermiticity serves as an indispensable tool for controlling both the operating mode and performance of a quantum engine.
  arXiv  Detail & Related papers  (2026-06-21T09:30:56Z)
• Nonselective generalized measurements as a resource for quantum thermal machines in a double quantum dot [0.0]
  We investigate quantum thermal machines powered by sequential nonselective generalized measurements.<n>The competition between detuning and tunneling hybridizes the localized states and modifies the energetic response of the cycle.<n>Coherent interdot coupling acts as an important resource for optimizing measurement-powered quantum thermal machines.
  arXiv  Detail & Related papers  (2026-05-08T01:56:46Z)
• Impossibility of Refrigeration and Engine Operation in Minimal Qubit Repeated-Interaction Models [39.146761527401424]
  We investigate the operation of a qubit as a quantum thermal device within the repeated interaction framework.<n>We analyze two minimal models: an alternating-coupling setup, and a simultaneous-coupling setup.<n>Our results establish fundamental limitations on qubit-based quantum thermal machines operating under Markovian repeated interactions.
  arXiv  Detail & Related papers  (2026-02-20T15:53:52Z)
• Heat measurement of quantum interference [35.638905508510135]
  coherence plays a key role in the operation and performance of quantum heat engines and refrigerators.<n>We measure quantum features in the heat transfer between a qubit and a thermal bath in a system formed of a driven flux qubit galvanically coupled to a $lambda/4$ coplanar-waveguide resonator.
  arXiv  Detail & Related papers  (2025-10-27T07:55:23Z)
• Hybrid Oscillator-Qubit Quantum Processors: Simulating Fermions, Bosons, and Gauge Fields [31.51988323782987]
  We develop a hybrid oscillator-qubit processor framework for quantum simulation of strongly correlated fermions and bosons. This framework gives exact decompositions of particle interactions as well as approximate methods based on the Baker-Campbell Hausdorff formulas. While our work focusses on an implementation in superconducting hardware, our framework can also be used in trapped ion, and neutral atom hardware.
  arXiv  Detail & Related papers  (2024-09-05T17:58:20Z)
• Advantages of non-Hookean coupling in a measurement-fueled two-oscillator engine [65.268245109828]
  A quantum engine composed of two oscillators with a non-Hookean coupling is proposed. Unlike the more common quantum heat engines, the setup introduced here does not require heat baths as the energy for the operation originates from measurements. Numerical simulations are used to demonstrate the measurement-driven fueling, as well as the reduced decoupling energy.
  arXiv  Detail & Related papers  (2023-11-08T04:09:26Z)
• Measuring the Loschmidt amplitude for finite-energy properties of the Fermi-Hubbard model on an ion-trap quantum computer [27.84599956781646]
  We study the operation of a quantum-classical time-series algorithm on a present-day quantum computer. Specifically, we measure the Loschmidt amplitude for the Fermi-Hubbard model on a $16$-site ladder geometry (32 orbitals) on the Quantinuum H2-1 trapped-ion device. We numerically analyze the influence of noise on the full operation of the quantum-classical algorithm by measuring expectation values of local observables at finite energies.
  arXiv  Detail & Related papers  (2023-09-19T11:59:36Z)
• Finite resolution ancilla-assisted measurements of quantum work distributions [77.34726150561087]
  We consider an ancilla-assisted protocol measuring the work done on a quantum system driven by a time-dependent Hamiltonian. We consider system Hamiltonians which both commute and do not commute at different times, finding corrections to fluctuation relations like the Jarzynski equality and the Crooks relation.
  arXiv  Detail & Related papers  (2021-11-30T15:08:25Z)
• Driven quantum harmonic oscillators: A working medium for thermal machines [0.0]
  We consider a working substance that is permanently coupled to two or more baths at different temperatures and continuously driven. We derive the heat flows and power of the working device which can operate as an engine, refrigerator or accelerator. An increased driving frequency can lead to a change of functioning to a dissipator.
  arXiv  Detail & Related papers  (2021-08-25T16:53:45Z)
• Experimental verification of fluctuation relations with a quantum computer [68.8204255655161]
  We use a quantum processor to experimentally validate a number of theoretical results in non-equilibrium quantum thermodynamics. Our experiments constitute the experimental basis for the understanding of the non-equilibrium energetics of quantum computation.
  arXiv  Detail & Related papers  (2021-06-08T14:16:12Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.