Latest posts tagged with #QuantumSimulation on Bluesky
QLLG dynamics enables real-time quantum ground-state preparation with convergence time linear in system size N and inverse to spectral gap—linking nonlinear dissipation to scalable quantum optimization and many-body physics.
#QuantumOptimization #QuantumSimulation #Research
GPU-accelerated simulator achieves 64–146× speedup over CPU on NVIDIA A100 (20–28 qubits) via empirical backend selection, DAG-based gate fusion (34–38% depth reduction), and memory-aware fallback. Validated on IBM Heron QPU; Bell state fidelity 0.939.
#QuantumSimulation #GPUAcceleration #NISQ
PID-controlled entropy feedback dynamically adjusts MPS bond dimensions per-bond, achieving 2.7× DMRG speedup and 7.1× GPU SVD acceleration at χ=2048, with energy accuracy within 0.1% of the Bethe ansatz on 100-site Heisenberg chains.
#QuantumSimulation #TensorNetworks #Research
Digital-analog quantum computing merges native analog blocks with digital gates, achieving scalable simulations on 100+ qubits across trapped-ion, superconducting, and Rydberg atom platforms—enabling quantum advantage without full error correction.
#DigitalAnalogQuantum #QuantumSimulation #Research
Using 1,024 NVIDIA H100 GPUs on Japan's ABCI-Q system, Osaka University (QIQB) & Fixstars simulated 42-qubit IQPE circuits for H₂O and Fe₂S₂ molecules, creating a high-fidelity testbed for future fault-tolerant quantum algorithms.
#QuantumChemistry #QuantumSimulation #News
Quanscient & Haiqu executed the most physically complex hardware QLBM demo: a 15-step nonlinear fluid benchmark on IBM Heron R3 using a novel One-Step Simplified LBM, reducing qubit count and circuit depth via Haiqu's middleware.
#QuantumCFD #QuantumSimulation #News
KAIST's Andreas Bluhm team achieves O(1/ε) optimal Hamiltonian certification via the Bonami Hypercontractivity Lemma—the first proven-optimal algorithm for this task—plus a sample-efficient Gibbs state learning method that avoids exponential complexity.
#QuantumAlgorithms #QuantumSimulation #News
Nuclear Quantum is shifting from R&D to industry engagement, offering quantum algorithm integration into existing nuclear simulation platforms to overcome precision-vs-computational-time bottlenecks. Market projected at $321M by 2031.
#QuantumSimulation #NuclearQuantum #News
Fujitsu & universities of Edinburgh/Exeter extend QCQMC beyond ground states using VUMPO classical pre-training, achieving near-exact energies with shallower circuits for molecular, condensed-matter, nuclear, and graph optimization problems.
#QuantumSimulation #QuantumAlgorithms #News
A protocol using mid-circuit measurements and iterative 'gauge cooling' actively suppresses Gauss law violations in SU(2) lattice gauge theory simulations, improving fidelity on superconducting hardware under depolarizing and amplitude damping noise.
#QuantumSimulation #LatticeGaugeTheory #Research
DMRG effective Hamiltonians—routinely used for ground-state approximation—are shown to capture many-body localization transitions, level statistics, and quantum many-body scars in large spin chains well beyond exact diagonalization limits.
#ManyBodyLocalization #QuantumSimulation #Research
ORNL researchers bridge Julia's ITensors ecosystem with TNQVM via a C-compatible ABI, enabling modern tensor network algorithms and entanglement entropy diagnostics in quantum circuit simulation, validated via Page curve and QAOA MaxCut benchmarks.
#TensorNetworks #QuantumSimulation #Research
Using 200 trapped 171Yb+ ions in a 2D Paul trap, researchers simulate a nonuniform Dicke model with site-resolved readout, revealing disorder-dependent thermalization speeds and subsystem entropy scaling beyond the reach of classical simulation.
#TrappedIons #QuantumSimulation #Research
EPFL & IBM researchers developed QFTLM, adapting the classical Lanczos method for quantum computers to compute thermal expectation values of many-body systems, validated on the transverse-field Ising model without exponential data demands.
#QuantumSimulation #QuantumAlgorithms #News
EPFL & IBM researchers present QFTLM, extending the Lanczos algorithm to quantum computers via trace estimation to compute thermal expectation values of many-body systems, demonstrated on the transverse-field Ising model.
#QuantumSimulation #QuantumAlgorithms #News
IISc researchers used Matrix Product States to show in-in formalism reduces entanglement by ~30% vs in-out for cosmological correlator calculations in φ⁴ theory, suggesting quantum computers could simulate early universe models more efficiently.
#QuantumSimulation #CosmologicalCorrelators #News
IISc researchers used Matrix Product States to show in-in formalism reduces entanglement demands by ~30% vs in-out for cosmological correlators in φ⁴ theory, suggesting quantum computers could tackle early-universe simulations more efficiently.
#QuantumSimulation #CosmologicalCorrelators #News
Simulating inertially coupled bosons (unifying quantum walks & classical oscillators) is BQP-complete. Extending to general quadratic Hamiltonians is PostBQP-hard, revealing a sharp complexity transition in bosonic quantum simulation.
#QuantumSimulation #QuantumComplexity #Research
PSA/dTWA method benchmarked on k-local Transverse Field Ising Model simulates up to 2000 qubits with quadratic scaling on classical hardware, accurately reproducing single-qubit observables and equilibration dynamics vs. exact/MPS methods.
#QuantumSimulation #ClassicalEmulation #Research
DMRG reveals competing chiral and pair superfluid phases in ultracold bosons on a tripod-scheme Kronig-Penney lattice, where geometric frustration (π-flux) and state-dependent pair hopping simultaneously engineer exotic many-body quantum phases.
#QuantumSimulation #UltracoldAtoms #Research
uniTEMPO enables efficient computation of multi-time correlation functions and 2D electronic spectra for non-Markovian open systems via time-translation invariant MPO, achieving superior O((χd²)²M²) scaling over PT-TEMPO without real-time evolution.
#QuantumSimulation #OpenQuantumSystems #Research
GNN trained on SDRG achieves ~94% pairing accuracy for disordered long-range quantum spin chains, reproducing entanglement entropy across all subsystem sizes and extending to finite-temperature via SDRG-X without retraining.
#QuantumML #QuantumSimulation #Research
A variational framework using two parameterized circuits compresses memory in recurrent quantum models, achieving up to 3 orders of magnitude lower fidelity divergence than MPS truncation—enabling scalable quantum process compression for NISQ devices.
#QuantumComputing #QuantumSimulation #Research
VAGD uses an autoencoder-decoder neural network to optimally decompose quantum wave functions into Gaussian wave packets, achieving near-exact quantum dynamics with ~100x fewer trajectories than prior time-sliced semiclassical methods.
#QuantumSimulation #QuantumDynamics #Research
A minimal π-flux hardcore boson ladder model exhibits exact quantum many-body scars via kinetic frustration, implementable on cold atom, Rydberg, and polar molecule platforms. Floquet engineering extends scar lifetimes for coherence benchmarking.
#QuantumSimulation #QuantumManyBodyPhysics #Research
NISQ-compatible quantum circuits using binary boson-to-qubit mapping simulate superradiant emission in many-emitter ensembles, capturing cooperative dynamics in inhomogeneous systems unreachable by mean-field or classical methods with ~20 qubits.
#QuantumSimulation #NISQ #Superradiance
New theorem proves 2-RDM matrix completion is unique when constrained to non-zero elements of the two-particle reduced Hamiltonian. A hybrid quantum–stochastic algorithm demonstrates exact reconstruction on the Fermi–Hubbard model.
#QuantumChemistry #QuantumSimulation #Research
Hilbert-space fragmentation in the perturbed infinite-U Hubbard chain drives spin subdiffusion via a porous medium equation—distinct from disorder or dipole-conserving models—with spin transport inherently coupled to charge transport scaling as m².
#QuantumSimulation #SpinTransport #Research
PASQAL's 256-qubit Rydberg QPU quantitatively reproduces magnetization of frustrated magnet TmMgGaO4, validates its 2D transverse-field Ising Hamiltonian, and accesses post-quench non-equilibrium dynamics beyond classical simulation reach.
#NeutralAtomQubits #QuantumSimulation #Research
PIMC simulations of bosons, fermions & anyons on a curved spherical surface reveal curvature effects on superfluidity, exchange-correlation holes, and particle path topology via the hairy ball theorem.
#QuantumSimulation #PathIntegralMonteCarlo #Anyons
