3 papers
quant-ph2026
Undamped Modes in an N-Qubit Heisenberg Chain with Collective Dissipation
Chun Hei Leung
We investigate the undamped behaviors in a spin-1/2 Heisenberg chain coupled with an environment via collective spin jump operators. Using the Bethe ansatz basis, we show that unda…
quant-ph2026
Engineer coherent oscillatory modes in Markovian open quantum systems
Chun Hei Leung, Pak-Tik Fong, Tianyi Yan +1
We develop a novel framework to engineer persistent oscillatory modes in Markovian open quantum systems governed by a time-independent Lindblad master equation. We show that oscill…
quant-ph2025
Hilbert space fragmentation in driven-dephasing Rydberg atom array
Tianyi Yan, Chun Hei Leung, Weibin Li
We investigate the onset and mechanism of Hilbert space fragmentation (HSF) in a chain of strongly interacting Rydberg atoms subject to local dephasing. It is found that the emerge…