aiqbench analysis
Composing insight from the full article — this may take a moment.
Realizing quantum energy storage and sensing with prethermal time crystals stabilized via power-law-graded Ising interactions
arXiv:2508.14847v4 Announce Type: replace Abstract: We study prethermal discrete time-crystalline (PDTC) phases in one-dimensional spin-1/2 chains with power-law-graded Ising interactions under periodic Floquet driving. By generalizing Stark localization to power-law-graded Ising interaction profiles, we identify robust period-doubled dynamics across a wide range of interaction exponents, stabilized by the interplay between coherent driving and spatially varying coupling. Within the PDTC phase, the energy stored in the system, interpreted as a quantum battery, increases superlinearly with system size, although no scaling advantage persists in normalized power. Beyond energy storage, we demonstrate that the PDTC phase supports enhanced quantum sensing. The quantum Fisher information associated with estimating timing deviations in the drive scales superlinearly with system size, indicating quantum-enhanced sensitivity. The degree of quantum advantage can be tuned by varying the interaction exponent, though PDTC behavior remains robust throughout. Our results position power-law-graded Ising interacting Floquet systems as robust platforms for storing quantum energy and achieving metrological enhancement.
Abstract:We study prethermal discrete time-crystalline (PDTC) phases in one-dimensional spin-1/2 chains with power-law-graded Ising interactions under periodic Floquet driving. By generalizing Stark localization to power-law-graded Ising interaction profiles, we identify robust period-doubled dynamics across a wide range of interaction exponents, stabilized by the interplay between coherent driving and spatially varying coupling. Within the PDTC phase, the energy stored in the system, interpreted as a quantum battery, increases superlinearly with system size, although no scaling advantage persists in normalized power. Beyond energy storage, we demonstrate that the PDTC phase supports enhanced quantum sensing. The quantum Fisher information associated with estimating timing deviations in the drive scales superlinearly with system size, indicating quantum-enhanced sensitivity. The degree of quantum advantage can be tuned by varying the interaction exponent, though PDTC behavior remains robust throughout. Our results position power-law-graded Ising interacting Floquet systems as robust platforms for storing quantum energy and achieving metrological enhancement.
Quantum Physics (quant-ph); Other Condensed Matter (cond-mat.other)
arXiv:2508.14847 [quant-ph]
(or arXiv:2508.14847v4 [quant-ph] for this version)
https://doi.org/10.48550/arXiv.2508.14847 Focus to learn more arXiv-issued DOI via DataCite
https://doi.org/10.1103/wtc4-3fsk Focus to learn more DOI(s) linking to related resources
arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website.
Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them.
Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs.
Full text under the publisher's open licence · 256 words