946 papers
This paper demonstrates that subspace-based excited state methods like QSE and qEOM suffer from severe instability due to the amplification of sampling errors by the condition number of the overlap matrix, whereas methods like q-sc-EOM that rely on standard eigenvalue equations offer a more robust and suitable alternative for quantum chemistry calculations on noisy quantum devices.
This paper presents a faster polynomial-time algorithm for simulating shallow nearest-neighbour Boson Sampling by adapting Laplace expansions to tree decompositions, which significantly reduces the computational complexity by reusing the decomposition structure to eliminate a factor of from the running time.
This paper introduces a Fourier analysis over the symmetric group to decompose many-body transition amplitudes into contributions from distinct irreducible exchange symmetries, thereby elucidating the mechanisms behind destructive interference in systems of partially distinguishable bosons and fermions.
This paper reviews classical and quantum benchmarking methodologies to identify the unique challenges of evaluating quantum processors, assesses existing metrics against quality attributes, and proposes general guidelines to establish a standardized performance evaluation framework akin to SPEC for the quantum computing industry.
This paper proposes a quantum epistemic framework where the observer effect is modeled as an entangled interaction between sensory data and observer states, utilizing fuzzy classification, Lindblad dynamics, and POVMs to formalize subjective perception and probabilistic inference as fundamental consequences of quantum correlations rather than observational flaws.
This paper presents a general method for reconstructing the spin density matrix of multi-particle systems from angular decay data using Bloch parameterization and Wigner-Weyl transforms, and applies it to Monte Carlo simulations of massive particle decays to propose measurements for detecting entanglement and Bell inequality violations.
This paper proves that the classification of two-dimensional symmetry-protected topological states by the cohomology group is complete for the specific subset of states that can be prepared from a product state via a symmetric entangler.
This study demonstrates that in correlated many-particle systems, increasing disorder strength systematically suppresses residual energy and temperature changes during interaction pulses, thereby enhancing adiabaticity alongside longer pulse durations, with triangular pulse profiles yielding the most adiabatic response.
This paper proposes and validates a hybrid quantum-classical framework that integrates a Long Short-Term Memory (LSTM) network with a Quantum Circuit Born Machine (QCBM) to significantly improve financial volatility forecasting accuracy on high-frequency stock market data compared to traditional classical models.
This paper analytically computes the capacity of entanglement in the Russo-Susskind-Thorlacius (RST) model of two-dimensional dilaton gravity, revealing that while single-interval capacity remains time-independent, the global replica backreaction induces a time-dependent capacity for two intervals that signals non-uniform saddle competition and sharp features at the Page transition.
Using time-dependent Hartree-Fock simulations, this study reveals that a harmonically trapped spin-3/2 Fermi gas exhibits weak ergodicity breaking and long-lived coherent oscillations driven by a quasi-regular, spectrally stable manifold rather than conventional eigenstate-dominated quantum scars.
This paper demonstrates a quantum weak measurement scheme using Rydberg atom-based electromagnetically induced transparency that leverages probe laser polarization changes to suppress technical noise and achieve a sensitivity of 33 for low-frequency electric field sensing.
This study reveals a mesoscopic nonlocal screening regime extending up to ~140 nm at buried interfaces in van der Waals heterostructures, demonstrating that phonon-polariton wavelength shifts provide a transferable metric for charge transfer that scales linearly with work-function differences and is governed by a lattice-mismatch energy threshold.
This theoretical study demonstrates that delayed even harmonics in a non-coaxial pump-probe setup serve as a sensitive probe for coherent phonon dynamics and electron-electron interactions in solids, revealing order-dependent phase shifts that elucidate microscopic effects in systems with dynamically broken inversion symmetry.
This review comprehensively outlines recent theoretical and experimental advances in diatomic Rydberg molecules, categorizing them by their binding mechanisms (ground-Rydberg, Rydberg-Rydberg, and ion-Rydberg) and detailing their formation, potential energy curves, experimental observations, and spectroscopic properties to provide a state-of-the-art overview of the field.
This paper experimentally demonstrates that the universal Family-Vicsek scaling laws, originally established for classical surface growth, also govern the non-equilibrium dynamics of quantum fluctuations in a one-dimensional Bose gas, thereby unifying the understanding of universality across classical and quantum systems.
This paper demonstrates that dressing the intermediate state of a hot Rb vapor with a strong control field enables the observation of high-optical-depth, sub-Doppler-width absorption lines at telecom wavelengths, achieving a significant reduction in linewidth without the need for laser cooling.
This paper demonstrates that the Rényi tripartite information in free-fermion systems exhibits a unique, -dependent scaling landscape where integer Rényi indices suffer from a "replica obstruction" that prevents reconstruction of the leading von Neumann signal, whereas negativity-based measures offer a significantly enhanced signal compared to standard entropy.
This paper reports the quantum simulation of massive relativistic fields in 2+1 dimensions using a two-component Bose-Einstein condensate to encode the sine-Gordon model, successfully demonstrating both tunable relativistic dispersion in the perturbative regime and non-perturbative topological domain walls.
This cross-platform study evaluates blind reset as a measurement-free ancilla recycling technique on superconducting and trapped-ion processors, demonstrating that it can significantly reduce logical-cycle latency while maintaining high ancilla cleanliness and identifying specific architecture-dependent crossover points for optimal deployment.