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quant-ph2026
Quantum Fragmentation
Yiqiu Han, Oliver Hart, Alexey Khudorozhkov +1
We introduce a systematic protocol for constructing quantum Hilbert-space-fragmented Hamiltonians, whose Krylov-sector structure, unlike in classically fragmented models, can be fu…
quant-ph2025
Entanglement Transitions in Noisy Quantum Circuits on Trees
Vikram Ravindranath, Yiqiu Han, Xiao Chen
Decoherence is ubiquitous, and poses a significant impediment to the observation of quantum phenomena, such as the measurement-induced entanglement phase transition (MIPT). In this…
quant-ph2025
Exponentially slow thermalization in 1D fragmented dynamics
Cheng Wang, Shankar Balasubramanian, Yiqiu Han +3
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…