Vine codes generalize directional codes to open planar boundaries, delivering up to 28% fewer data/measure qubits at circuit distance 7 and better simulated performance than the surface code at 10^{-3} noise while using fewer total qubits.
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Classical codes plus SAT search yield no-go theorems limiting error detection in sub-8-qubit distillation and new minimal-qubit protocols for T-to-T (distances 4-5 on 10-11 qubits) and T-to-CCZ (distances 3-4 on 9-10 qubits).
In disordered 1D quantum spin ensembles with Ising symmetry, gapped phases exhibit a strict trade-off: they have either long-range Edwards-Anderson order or even-parity disorder, but not both.
Quantum coherences bind to hydrodynamic voids forming polaron-like objects, parametrically enhancing lifetimes and producing subdiffusive Green's functions in charge-conserving dynamics.
For PEPS with strong injectivity above a threshold, belief propagation finds fixed points efficiently and cluster-corrected BP approximates observables to 1/poly(N) error in poly(N) time, with local perturbations affecting the fixed point only locally.
Cryogenic shock exfoliation yields large rhombohedral graphene devices over 1300 square micrometers with 90% fabrication yield, mean free path exceeding 200 micrometers, and signatures of electron hydrodynamics.
Alterelectrics exhibit quadrupolar piezoelectricity, hyperbolic wave dispersion, and surface-dependent anisotropic electronic transport as an electric analog to altermagnets.
Genuine quantum scars survive in Floquet many-body systems with additional drive-induced scars and a stability diagram explained by classical Lyapunov exponents.
For PEPS states with loop-decay, BP with cluster corrections approximates local observables exponentially accurately, and loop-decay necessarily implies exponential decay of connected correlations, ruling out BP at critical points.
Engineered disorder drives a photonic lattice into a topological Anderson insulator regime that produces emergent chiral edge states for boundary-selective, ultranarrow lasing with enhanced robustness.
Shaping the pump in a honeycomb photonic-crystal laser creates a smooth potential that traps lasing states with reconfigurable real-space polarization singularities pinned to envelope critical points, while the momentum-space vortex at Gamma remains fixed.
Averaging symmetric Z_N quantum circuits over random noise produces a noisy surface code whose logical information is protected against symmetric errors up to a threshold, with charge-sharpening transitions coinciding with bulk confinement transitions that differ for N≤4 versus N>4.
Symmetry classification of measurement-inclusive fermionic dynamics with equivalence between many-body and single-particle schemes, plus post-selection-free adaptive circuits for topological states in four classes.
A sample-optimal quantum state tomography algorithm that is memory-efficient by using unitary Schur sampling with streaming access to samples.
Thousands of foundry-fabricated quantum-dot spin-photon interfaces demonstrate state-of-the-art efficiency, stable near-unity purity, seven-partite entanglement, and cross-source indistinguishability.
Derives improved mode-independent sample complexity bounds O(η log η) for fermionic classical shadows on particle-preserving operators and Slater determinant overlaps.
Experimental observation of nonlinear dependence of ion loss rate on spin polarization in Ba+ immersed in two-component Li Fermi gas, consistent with antisymmetrization restricting recombination channels.
Proposes relative-entropy-based measures to diagnose chirality in mixed-state topological phases after showing pure-state diagnostics are unreliable.
Broadband laser pulses enhance two-plasmon decay instability and hot electron generation via stochastic intensity spikes, as identified in experiments and particle-in-cell simulations.
Analytical derivation shows mutual relations between density, magnetic, and pairing susceptibilities in the Hubbard model, revealing a degeneracy between d-wave pairing and d-density wave instabilities near the metal-insulator transition that is lifted by frustration.
Quasiprobability models in Bayesian networks generalize to produce all non-signalling correlations for a broad class of networks and conjecturally recover the nested Markov model.
Simulations show update mechanisms decide coexistence versus dominance of upstream and downstream reciprocators, with a robust optimal network degree maximizing upstream reciprocity across conditions.
Derives exact propagator via generating functions for age-dependent switching particles and reports marginal CLT breakdown with Var(x_T) scaling as T²/log T at a=1.
Quenching the hopping term in the strong-coupling half-filled Hubbard model creates a prethermal state with effective temperature reduced by (t_final/t_initial)^2 for doublon-conserving operators, persisting exponentially long in (U/t)^2.
citing papers explorer
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Nonlocal thermal Willis coupling in laminated conductors
Computes nonlocal effective kernels for thermal bianisotropy in periodic laminates using three homogenization methods, revealing consistent cross-coupling terms and direction-dependent thermal impedance.
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Beyond Commutativity: Redesigning Trotter Decomposition via Local Symmetry
A local SU(2) symmetry-based product formula clusters Hamiltonian terms into at most four classes for exact two-qubit implementations, cutting commutator errors and gate count in many-body simulations.
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Chiral-Mode Control around a Hermitian Diabolic Point in Discrete Non-Hermitian Coupled Resonators
In a three-resonator model, an asymptotic exceptional point at a Hermitian diabolic point enables chiral-mode switching with eigenvalue response scaling as the 3/2 power of perturbation strength.
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Parallel Scan Recurrent Neural Quantum States for Scalable Variational Monte Carlo
PSR-NQS makes recurrent neural quantum states scalable for variational Monte Carlo by using parallel scan recurrence, reaching accurate results on 52x52 two-dimensional lattices.
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Nematicity in LaFeAsO single crystals studied by elastoresistance, high-resolution thermal expansion and shear-modulus measurements
LaFeAsO shows differing Weiss temperatures for shear-modulus-derived and elastoresistivity-derived nematic susceptibilities, unlike the matching behavior in BaFe2As2 that aligns with Landau theory.
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No measurement induced phase transition in the entanglement dynamics of monitored non-interacting one-dimensional fermions in a disordered or quasiperiodic potential
Large-scale numerics and nonlinear sigma model mapping demonstrate that monitored non-interacting 1D fermions in disordered or quasiperiodic potentials remain in the area-law phase for all monitoring and disorder strengths, with no MIPT.
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Generalized master equation for driven quantum oscillators: microscopic origin of nonlinear dissipation and asymmetric resonances
A generalized master equation retaining full nonlinear dynamics in the dissipator produces nonlinear damping, drive-dependent dissipation, suppression of bistability, and asymmetric resonances in driven Kerr oscillators.
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Does a Fractional Quantum Hall Edge Have a Protected Intrinsic Dipole Moment?
The claimed intrinsic dipole moment at FQH edges is protected only at filling factor 1/3 and absent in other representative edge systems.
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Band Unfolding via the Quadratic Pseudospectrum
A quadratic pseudospectrum framework finds approximate joint eigenvectors of the Hamiltonian and translation operators to produce unfolded band structures in aperiodic and finite systems.
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Charge Scrambling in Strong-to-Weak Spontaneous Symmetry Breaking
Long-range Rényi-1 SWSSB order implies extensive block-charge variance for continuous symmetries with rapid asymptotic approach, with conditional counterexamples and a new twist overlap correlator separating symmetry channels and linking to skew information.
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Quantum chaos with graphs: a silicon photonics plateform
A silicon photonics waveguide network implements quantum graphs, experimentally confirming that strongly chaotic versions exhibit random matrix theory spectral statistics unlike less chaotic ones.
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Adjacent Sink Strengths Used in Multiscale Kinetic Rate Equation Simulations of Defects and Impurities in Solids
Analytical expressions for adjacent sink strengths are derived for the first time to capture immediate retrapping in kRE simulations, yielding correct TDS peak temperatures unlike random-position-only models.
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Thermodynamic incompleteness of state dynamics in Markovian transport
Markovian state dynamics are thermodynamically incomplete because reservoir-channel assignments can vary while leaving the master equation unchanged, yielding different heat currents, entropy production, and noise.
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Memory-assisted multimode microwave-to-optical transduction
First experimental demonstration of memory-assisted on-demand multimode microwave-to-optical transduction with 0.3-0.4 noise photons at 460-620 microsecond storage in a 171Yb3+:Y2SiO5 crystal at 30 mK.
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Stochastic Cluster Expansion for Excited State Energies
Stochastic cluster expansion is extended to excited states by reconstructing energy differences from reduced-rank calculations on a minimal frontier chemical subspace treated exactly plus stochastic sampling of the orbital environment.
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Dispersion of Anyon Bloch Bands
Anyon Bloch bands in ideal FCIs have m-fold degeneracy in the magnetic BZ and bandwidth controlled by quantum geometry non-uniformity, with higher harmonics strongly suppressing dispersion through emergent symmetries.
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Relations between density-density correlators of states in the maximal spin multiplet
Identities relate density-density correlators across a spin multiplet, allowing energies of many fractional quantum Hall states to be obtained from the highest-weight state alone.
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Composite quantum gates simultaneously compensated for multiple errors
New symmetric five-pulse and longer composite sequences are constructed that compensate amplitude, detuning, and duration errors for X and Hadamard gates via derivative cancellation in the Cayley-Klein parametrization and numerical infidelity minimization.
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pygridsynth: A fast numerical tool for ancilla-free Clifford+T synthesis
pygridsynth provides O(log(1/ε)) ancilla-free Clifford+T synthesis with a new partial-decomposition technique for n≥3 reducing T-count constants to (21/8·4^n - 9/2·2^n + 9)log₂(1/ε) + o(log(1/ε)) and a mixed-synthesis approach empirically lowering error to ε²/(2n).
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Arrow of Time as an indicator of Measurement-Induced Phase Transitions
The arrow of time exhibits nonanalytic behavior at the critical point of measurement-induced phase transitions, with an identified critical exponent, in an exactly solved model of random quantum circuits with non-projective measurements.
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Conformal Elastodynamics in 2D Dilational Metamaterials
A dilational mechanical metamaterial exhibits approximate conformal symmetry, dominating low-frequency responses with boundary-concentrated deformations and implying conserved complex momenta at high frequencies.
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Feature-level analysis and adversarial transfer in rotationally equivariant quantum machine learning
Rotationally equivariant quantum models can rely on vulnerable invariant statistics such as ring-averaged intensities, leaving them susceptible to classical transfer attacks, but suppressing the associated symmetry sectors substantially improves robustness.
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Quantum Search without Global Diffusion
A recursive construction preserves O(sqrt(N)) quantum search complexity with local operations on tensor-decomposable partitions, eliminating the need for global diffusion via degeneracy in reflection angles.
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General framework for anticoncentration and linear cross-entropy benchmarking in photonic quantum advantage experiments
A representation-theoretic framework computes LXEB scores and proves anticoncentration for Fock-state Boson Sampling in the saturated regime using irrep decompositions of bosonic spaces.
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Quantum Mpemba Effect in Non-Equilibrium Quantum Thermometry
Optimal initial states for non-equilibrium quantum thermometry exhibit the quantum Mpemba effect and thermalize faster than most states in Markovian models.
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A tensor invariant approach to energy flux in magnetohydrodynamic turbulence
Gradient tensor invariants serve as proxies for mechanistic energy fluxes and bound available flux in MHD turbulence, with exact expressions for hydrodynamic cases.
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Breakdown of spallation in multi-pulse ultrafast laser ablation
Homogeneous spallation in multi-pulse ultrafast laser ablation of metals is a single-pulse phenomenon that breaks down after three to four pulses, transitioning to phase-explosion-like behavior.
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Hilbert Space Fragmentation from Generalized Symmetries
Generalized symmetries generate exponentially many Krylov sectors in quantum many-body systems, showing that Hilbert space fragmentation does not by itself imply ergodicity breaking.
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Experimental Determination of the $D1$ Magic Wavelength for $^{40}$K
First experimental measurement of the D1 magic wavelength in 40K at 1227.54(3) nm via tunable optical tweezer loss spectroscopy.
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Efficient classical training of model-free quantum photonic reservoir
Classical light training of photonic quantum reservoirs enables accurate model-free estimation of single-qubit observables and two-qubit entanglement witnesses on unseen quantum states.
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Network Nonlocality with Separable Measurements
Separable measurements augmented with classical feedforward suffice to certify full network nonlocality and minimal network nonclassicality while enabling device-independent randomness quantification.
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From credible shell model interactions to neutron-capture uncertainties
The USDBUQ500 shell model yields 6% uncertainty in NLDs and 9% in RSFs for 27Al, producing 5-25% uncertainty in the neutron-capture cross section with a non-Gaussian distribution.
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Machine Learning Phase Field Reconstruction in a Bose-Einstein Condensate
A U-Net-based ML pipeline reconstructs the complete phase field and quantized vortex charges in 2D Bose-Einstein condensates from density snapshots alone, using synthetic training data from projected Gross-Pitaevskii simulations.
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Nonequilibrium crossover in the supercritical region from quench dynamics
Quench dynamics in a holographic superfluid reveal a nonequilibrium crossover line in the supercritical region defined by a turning point in invasion velocity.
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Analog regular black holes and black hole mimickers for surface-gravity waves in fluids
Surface-gravity waves in shallow water can be configured with central and graded drainage to analogize regular black holes and mimickers, enabling lab study of their instabilities.
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Geometry-Induced Long-Range Correlations in Recurrent Neural Network Quantum States
Dilated RNN wave functions induce power-law correlations for the critical 1D transverse-field Ising model and the Cluster state, unlike the exponential decay of conventional RNN ansatze.
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On Lorentzian symmetries of quantum information
Lorentzian symmetries emerge from preserving linear entropy in qubits, yielding SL(2,C) invariants for spectral quantities and the Minkowski metric from singlet-state correlations.
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Viscous Bending Mitigates the Spontaneous Meandering of Rivulets in Hele-Shaw Cells
Viscous bending in depth-averaged Navier-Stokes equations selects the fastest-growing meandering mode for rivulets in Hele-Shaw cells and reveals a friction-driven instability mechanism.
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Non-Monotonicity of Transverse Momentum Correlations in Au + Au Collisions at RHIC
First measurements of pT correlations in Au+Au collisions at 3-7.7 GeV reveal non-monotonic energy dependence in central events with 5 sigma significance, breaking 1/sqrt(N_part) scaling.
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Universal Scaling and Many-Body Resurrection of Polaritonic Double-Quantum Coherences
Molecular many-body interactions resurrect polaritonic double-quantum coherences in strong coupling via the resonance condition Δ_B + 4J = Ω_R that exploits spatial mismatch to break harmonic cancellation.
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How pore-scale disorder controls fluid stretching in porous media
Pore-scale disorder accelerates fluid stretching in porous media, producing quadratic time growth and faster mixing than the linear growth seen in ordered structures.
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A Unified Poisson Summation Framework for Generalized Quantum Matrix Transformations
A dual Fourier-PSF and contour-PSF framework resolves the smoothness-sparsity trade-off for efficient quantum simulation of singular and holomorphic matrix functions.
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Optimal Control of a Mesoscopic Information Engine
Optimal feedback laws and measurement schedules are derived for a mesoscopic information engine with costly binary sensors, recovering the Schmiedl-Seifert protocol in the open-loop limit and revealing deadline-induced blindness plus periodic steady-state schedules.
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Non-stabilizerness and U(1) symmetry in chaotic many-body quantum systems
Exact results show U(1) symmetry substantially suppresses non-stabilizerness in random states, with different leading scaling from entanglement near zero charge density.
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Thermalization of SU(2) Lattice Gauge Fields on Quantum Computers
Quantum hardware simulation of SU(2) lattice gauge thermalization matches classical extrapolations up to 101 plaquettes after error mitigation, establishing feasibility for chaotic quantum field systems.
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The typicality of symmetry-induced entanglement
Most symmetric separable states with conserved charge N are not symmetrically separable, with number entanglement showing Gaussian concentration around a strictly positive value.
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Matrix Product States for Modulated Topological Phases: Crystalline Equivalence Principle and Lieb-Schultz-Mattis Constraints
Modulated SPT phases in 1D are classified by H²(G, U(1)_s) and obey LSM-type theorems forbidding symmetric short-range entangled ground states.
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Towards a Refinement of Krylov Complexity: Scrambling, Classical Operator Growth and Replicas
LogK complexity via replicas distinguishes genuine scrambling from saddle effects in quantum and classical systems and refines the measure for integrable cases.
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On Non-Existence of Stabilizer Absolutely Maximally Entangled States in Even Local Dimensions
Stabilizer AME states do not exist for N=4n qudits of even local dimension d; optimal mixed AME states of purity 1/2 exist for d=6.
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Compactifying the Electronic Wavefunction II: Quantum Estimators for Spin-Coupled Generalized Valence Bond Wavefunctions Applied to H4
An ancilla-free quantum measurement scheme using local Clifford rotations and Pauli observables evaluates SCGVB matrix elements, demonstrated on H4 dissociation with results matching classical references.