Incremental swap operator for entanglement entropy: Application for exponential observables in quantum monte carlo simulation

X Zhou, ZY Meng, Y Qi, Y Da Liao - Physical Review B, 2024 - APS
We propose a method to efficiently compute the entanglement entropy (EE) of quantum
many-body systems. Our approach, called the incremental SWAP operator method …

Thermodynamic response and neutral excitations in integer and fractional quantum anomalous Hall states emerging from correlated flat bands

H Lu, BB Chen, HQ Wu, K Sun, ZY Meng - Physical Review Letters, 2024 - APS
Integer and fractional Chern insulators have been extensively explored in correlated flat
band models. Recently, the prediction and experimental observation of fractional quantum …

Chiral pseudospin liquids in moiré heterostructures

C Kuhlenkamp, W Kadow, A Imamoğlu, M Knap - Physical Review X, 2024 - APS
We propose multilayer moiré structures in strong external magnetic fields as a novel platform
for realizing highly tunable, frustrated Hubbard physics with topological order. Identifying the …

Theory of fractional quantum Hall liquids coupled to quantum light and emergent graviton-polaritons

Z Bacciconi, H Xavier, I Carusotto, T Chanda… - arxiv preprint arxiv …, 2024 - arxiv.org
Recent breakthrough experiments have demonstrated how it is now possible to explore the
dynamics of quantum Hall states interacting with quantum electromagnetic cavity fields …

A numerical study of bounds in the correlations of fractional quantum Hall states

P Kumar, FDM Haldane - SciPost Physics, 2024 - scipost.org
We numerically compute the guiding center static structure factor $\bar S (k) $ of various
fractional quantum Hall (FQH) states to $\mathcal {O}(k\ell)^ 6$ where $ k $ is the …

Enhanced entanglement scaling and area-law charge fluctuations in a non-Fermi liquid of composite fermions

C Voinea, S Pu, AC Balram, Z Papić - arxiv preprint arxiv:2407.11119, 2024 - arxiv.org
The composite fermion Fermi liquid (CFL) state at $\nu {=} 1/2$ filling of a Landau level is a
paradigmatic example of a non-Fermi liquid borne out purely by Coulomb interactions. But in …

From a fractional quantum anomalous Hall state to a smectic state with equal Hall conductance

H Lu, HQ Wu, BB Chen, ZY Meng - arxiv preprint arxiv:2404.06745, 2024 - arxiv.org
The recent developments in twisted MoTe $ _2 $ and rhombohedral multilayer graphene
have generated widespread attention to the general features of fractional quantum …

A platform for far-infrared spectroscopy of quantum materials at millikelvin temperatures

M Onyszczak, AJ Uzan-Narovlansky, Y Tang… - Review of Scientific …, 2023 - pubs.aip.org
Optical spectroscopy of quantum materials at ultralow temperatures is rarely explored, yet it
may provide critical characterizations of quantum phases not possible using other …

Single-particle spectral function of fractional quantum anomalous Hall states

F Pichler, W Kadow, C Kuhlenkamp, M Knap - Physical Review B, 2025 - APS
Fractional quantum Hall states are the most prominent example of states with topological
order, hosting excitations with fractionalized charge. Recent experiments in twisted MoTe 2 …

Interaction-driven Roton Condensation in C= 2/3 Fractional Quantum Anomalous Hall State

H Lu, HQ Wu, BB Chen, K Sun, ZY Meng - arxiv preprint arxiv:2403.03258, 2024 - arxiv.org
The interplay of topological order and charge order exhibits rich physics. Recent
experiments that succesfully realized the frational quantum anomalous Hall (FQAH) effect in …