@informaq.bsky.socialNear quantum critical points, non-Markovian effects enable simultaneous optimization of efficiency, power, and stability in quantum Otto engines via energy spectrum engineering—overcoming traditional power-efficiency trade-offs.
@informaq.bsky.socialResearchers developed an analytical method to precisely calculate work statistics in complex quantum systems using the inhomogeneous Metaplectic group framework, enabling accurate thermodynamic calculations without computational simulations.
@informaq.bsky.socialNovel protocol for extracting work from quantum batteries via measurement-assisted feedback and continuous-variable pointer entanglement. Recovers full ergotropy through quantum Maxwell demon realization in trapped-ion systems.
@informaq.bsky.socialNovel quantum heat engine design uses Maxwell's demon feedback to achieve near-perfect efficiency and high power output simultaneously, overcoming fundamental quasi-static performance limitations through quantum coherence preservation.
@informaq.bsky.socialMaxwell's demon-based quantum heat engine exceeds standard Otto and Carnot efficiencies through selective trajectory filtering. Even accounting for demon costs and leveraging measurement errors, the engine achieves superior work output and stability.
@informaq.bsky.socialQuantum information engines with continuous Maxwell's demons achieve unlimited work extraction, eliminate thermal fluctuations, and surpass Carnot efficiency—validated through simulations using experimental nuclear magnetic resonance parameters.
@informaq.bsky.socialResearchers establish that quantum measurement coherence is both necessary and sufficient for work extraction advantages from unknown quantum systems, with quantitative bounds relating advantage to coherence measures.
@informaq.bsky.socialDemonstrates how irreversible statistical mechanics and thermodynamic behavior emerge from reversible quantum dynamics using exact open system theory, resolving century-old paradoxes about the origin of probability in quantum systems.
@informaq.bsky.socialTransient system-bath correlations trigger anomalous relaxation: hotter quantum systems can thermalize faster than colder ones when initial-slip dynamics dominate, persisting beyond Markovian approximations.
@informaq.bsky.socialDerives a finite-time thermodynamic uncertainty relation bounding work fluctuations in driven open quantum systems via quantum Fisher information, showing how activity and entropy production bounds switch depending on protocol and timescale.
@informaq.bsky.socialSplettstösser reveals that thermodynamic and kinetic uncertainty relations constrain fluctuations in quantum heat engines, addressing limitations of applying weakly-coupled theories to strongly-coupled small-scale thermoelectric devices.
@informaq.bsky.socialDevelops an interferometric protocol to define heat distributions for quantum fields in thermal states, establishing exact fluctuation relations and Landauer bounds—bridging relativistic quantum field theory and quantum thermodynamics.