Universal and Tunable Sudden Freezing of Entanglement Volume
Abstract
In a system where two identical two-level atoms interact with their common one-mode cavity field, it is shown that entanglement can become abruptly frozen in time, remaining at a constant value for a period of time until it begins to thaw from this value from the entanglement sharing perspective [Ding et al., Phys. Rev. A 103, 032418 (2021)]. We generalize this exotic behavior of entanglement sharing dynamics to more general systems with arbitrary N qubits, instead of restricting to the atom-cavity mode interaction system. We also demonstrate methods to control the entanglement freezing time and freezing value, and we discover a nontrivial dynamics where entanglement is frozen permanently. In addition, we show that this phenomenon is not a coincidence but a universal feature in a variety of systems with a geometric explanation of the mechanisms.
Keywords
Cite
@article{arxiv.2511.04927,
title = {Universal and Tunable Sudden Freezing of Entanglement Volume},
author = {Luchang Niu and Joseph H. Eberly},
journal= {arXiv preprint arXiv:2511.04927},
year = {2025}
}