Yiqiu Han
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View article: Exponentially slow thermalization in 1D fragmented dynamics
Exponentially slow thermalization in 1D fragmented dynamics Open
We investigate the thermalization dynamics of 1D systems with local constraints coupled to an infinite temperature bath at one boundary. The coupling to the bath eventually erases the effects of the constraints, causing the system to tend …
View article: Exponentially slow thermalization and the robustness of Hilbert space fragmentation
Exponentially slow thermalization and the robustness of Hilbert space fragmentation Open
The phenomenon of Hilbert space fragmentation, whereby dynamical constraints fragment Hilbert space into many disconnected sectors, provides a simple mechanism by which thermalization can be arrested. However, little is known about how the…
View article: Entanglement dynamics in U(1) symmetric hybrid quantum automaton circuits
Entanglement dynamics in U(1) symmetric hybrid quantum automaton circuits Open
We study the entanglement dynamics of quantum automaton (QA) circuits in the presence of U(1) symmetry. We find that the second Rényi entropy grows diffusively with a logarithmic correction as , saturating the bound established by Huang \c…
View article: Entanglement dynamics in U(1) symmetric hybrid quantum automaton circuits
Entanglement dynamics in U(1) symmetric hybrid quantum automaton circuits Open
We study the entanglement dynamics of quantum automaton (QA) circuits in the presence of U(1) symmetry. We find that the second Rényi entropy grows diffusively with a logarithmic correction as $\sqrt{t\ln{t}}$, saturating the bound establi…
View article: Entanglement Steering in Adaptive Circuits with Feedback
Entanglement Steering in Adaptive Circuits with Feedback Open
The intensely studied measurement-induced entanglement phase transition has become a hallmark of non-unitary quantum many-body dynamics. Usually, such a transition only shows up at the level of each individual quantum trajectory, and is ab…
View article: Entanglement structure in the volume-law phase of hybrid quantum automaton circuits
Entanglement structure in the volume-law phase of hybrid quantum automaton circuits Open
We study entanglement fluctuations and quantum error correction in the weakly monitored volume-law phase of quantum automaton circuits subject to repeated local measurements. We numerically observe that the entanglement entropy exhibits st…
View article: Measurement-induced criticality in $\mathbb{Z}_2$-symmetric quantum automaton circuits
Measurement-induced criticality in $\mathbb{Z}_2$-symmetric quantum automaton circuits Open
We study entanglement dynamics in hybrid $\mathbb{Z}_2$-symmetric quantum automaton circuits subject to local composite measurements. We show that there exists an entanglement phase transition from a volume law phase to a critical phase by…