5 papers
Hilbert space connectivity in non-Hermitian many-body systems: emergent scale-dependent amplification and constraint-induced skin localization
Zichang Hao, Wen-Tan Xue, Ching Hua Lee
Various exotic many-body phenomena such as quantum scars and fractons have been linked to Hilbert space fragmentation. In this work, we find that in non-Hermitian settings, Hilbert…
Non-Hermitian Edge State Endocytosis
Si-Yu Yuan, Wen-Tan Xue, Ching Hua Lee
An isolated edge state observed in a finite open chain is usually expected to survive the thermodynamic limit (TDL), with a localization mechanism distinct from non-Hermitian skin…
Interacting non-Hermitian edge and cluster bursts on a digital quantum processor
Jin Ming Koh, Wen-Tan Xue, Tommy Tai +2
A lossy quantum system harboring the non-Hermitian skin effect can in certain conditions exhibit anomalously high loss at the boundaries of the system compared to the bulk, a pheno…
Non-Hermitian entanglement dip from scaling-induced exceptional criticality
Sirui Liu, Hui Jiang, Wen-Tan Xue +4
It is well established that the entanglement entropy of a critical system generally scales logarithmically with system size. Yet, in this work, we report a new class of non-Hermiti…
Topologically protected negative entanglement
Wen-Tan Xue, Ching Hua Lee
The entanglement entropy encodes fundamental characteristics of quantum many-body systems, and is particularly subtle in non-Hermitian settings where eigenstates generically become…