222 papers
This paper proposes an intuitive coupled-layer construction for quantum product codes, demonstrating that they can be formed by stacking one code and condensing excitations according to the checks of another, thereby unifying physical mechanisms for topological phases and extending to non-topological codes.
This paper systematically investigates quantum phase transitions in sub-Ohmic spin-boson systems with three competing terms using variational calculations, revealing a rich phase diagram that includes a novel U(1)-symmetric phase and a multi-stage transition sequence at low tunneling strengths, thereby extending beyond conventional spin-boson physics.
Using large-scale quantum Monte Carlo simulations, this study reveals that infinite-range light-matter interactions in frustrated Rydberg atom triangular arrays lift ground-state degeneracy to induce a novel superradiant clock phase, replacing fragile classical order-by-disorder with a first-order transition driven by nonzero photon density and nonlocal ring exchange interactions.
This paper introduces a Cholesky-based compression (CBC) algorithm that efficiently applies tree tensor network operators to tree tensor network states, demonstrating runtime performance superior to most established methods while maintaining accuracy comparable to state-of-the-art techniques in both random benchmarks and realistic circuit simulations.
This paper establishes the theoretical universality of analog quantum simulators under global control, introduces a direct quantum optimal control framework to bridge theory with experimental reality, and demonstrates the successful engineering of complex multi-body interactions and topological dynamics on a Rydberg-atom array.
This paper investigates the stability and excitation properties of topological states in moiré flat bands modeled as opposite-Chern Landau levels under external magnetic fields, revealing interaction-driven phase transitions and spin-flip instabilities along Streda lines while introducing a novel "center-of-charge" basis to exactly solve the two-body problem with unequal magnetic fields, thereby extending Haldane pseudopotentials to capture non-monotonic interaction structures.
This paper introduces a paradigm shift in Quantum Monte Carlo simulations by replacing the partition function with a generalized reduced-density-matrix (GRDM) as the sampled object, thereby overcoming measurement bottlenecks to enable the direct and efficient extraction of off-diagonal dynamical observables and mixed-state correlators.
This paper investigates an open Sachdev-Ye-Kitaev model coupled to a pseudogapped fermionic bath using the Keldysh formalism, revealing a rich dynamical phase diagram where non-Markovian dissipation competes with internal chaos to produce distinct regimes of power-law and exponential relaxation, as well as an intermediate crossover phase.
Using the density-matrix renormalization group method, this study demonstrates that Emery ladders preserving the Cu-to-O ratio transition from charge-transfer insulators to Luther-Emery liquids with enhanced pairing upon doping, successfully reproducing the relationships between charge distribution, pairing strength, and interactions observed in both two-dimensional models and experiments.
This paper extends the multipole formalism from one-body to many-body operator spaces by utilizing spherical tensor fermionic operators and exterior algebra to systematically classify interacting systems, revealing that electric and magnetic toroidal monopoles emerge in spinless many-body systems despite being absent in single-particle hybrid orbital spaces.
Using scanning tunneling microscopy, researchers report the first experimental observation of a translational-symmetry-breaking Kondo hybridization wave on the surface of the heavy-fermion superconductor UTe2, revealing a new ordered phase that coexists with superconductivity and offers fresh insights into the material's unconventional pairing mechanism.
By combining *ab initio* calculations with generalized Schwinger-boson mean-field theory, this study demonstrates that while exchange coupling to decorating sites stabilizes a gapped quantum-paramagnetic phase in the square-kagome antiferromagnet NaCuBiO(PO)Cl, symmetry-allowed Dzyaloshinskii-Moriya interactions suppress the spinon gap and drive the system toward a magnetic instability.
This paper investigates multipartite entanglement in pure BTZ black hole states within AdS/CFT using multi-entropy and Steiner trees, revealing a high-temperature volume-law scaling for genuine tripartite entanglement, a phase transition when a subsystem exceeds half the total size, and nontrivial radial cutoff dependencies that contrast with vacuum AdS behavior.
Using ultrafast resonant X-ray scattering, researchers discovered that photo-excitation in YBaCuO selectively melts long-range charge density wave order while revealing persistent short-range correlations, thereby demonstrating a method to disentangle coexisting electronic orders based on their distinct fluence thresholds and recovery timescales.
This paper systematically bridges the gap between continuum topological field theory and microscopic lattice constructions of three-dimensional non-Abelian topological orders by explicitly deriving fusion and shrinking rules for the quantum double model, thereby establishing a precise correspondence with a field theory with an twist and resolving long-standing skepticism regarding its microscopic realizability.
This study provides the first direct evidence of a tunable Quantum Anomalous Hall state with spontaneous ferromagnetism in twisted bilayer WSe2 by utilizing polarization-resolved attractive polaron spectroscopy to observe time-reversal symmetry breaking and confirm a Chern number of C=1.
This study utilizes soft X-ray angle-resolved photoemission spectroscopy to map the electronic band structure of a (111)-oriented LaSrMnO thin film, confirming theoretical predictions and demonstrating pronounced momentum-resolved magnetic circular dichroism at the Mn L-edge as a powerful tool for investigating unconventional magnetism.
This paper theoretically determines the ground-state phase diagram of rare-earth based 1/1 periodic approximants to icosahedral quasicrystals, revealing eight stabilized non-collinear and non-coplanar magnetic structures with specific space groups and topological properties that explain experimental observations.
This paper presents an ab initio quantum embedding workflow that derives interacting flat-band Hamiltonians for magic angle twisted bilayer graphene, revealing robust insulating states at and while uncovering a fragile semimetal with Kekulé modulation at and explaining the resulting particle-hole asymmetry through momentum-dependent single-particle renormalizations.
This paper develops a symmetry-adapted multipolar theory for noncentrosymmetric crystals in the strong spin-orbit coupling limit, revealing that multipolar interactions for reshape Fermi surfaces and create distinct total-angular-momentum textures that lead to nonmonotonic, enhanced Edelstein effects in heavy-element materials.