1075 papers
This paper demonstrates that realistic, noisy Gottesman-Kitaev-Preskill (GKP) stabilizer states, when combined with Gaussian operations and homodyne measurements, enable universal quantum computation by facilitating both high-fidelity Clifford gates and probabilistic non-Clifford gates within a measurement-based continuous-variable framework.
This paper demonstrates that semi-classical quantization of the Euler-Bernoulli beam model reveals a photonic Casimir effect and identifies that specific boundary conditions, particularly hinged-hinged, create degenerate or quasi-degenerate states that form decoherence-free subspaces or significantly reduce decoherence rates in thermal environments.
This paper presents a differential magnetic sensing technique using a cold-atom cloud in a magnetic quadrupole trap, which achieves milli-Gauss resolution by measuring the displacement of the trap center under field reversal to cancel common-mode noise without requiring spectroscopic interrogation.
This paper introduces MPI into the QED-C benchmarks to evaluate multi-GPU quantum circuit simulations, demonstrating that while GPU architecture improvements yield significant speedups, advancements in interconnect technology provide even greater performance gains, with the new NVIDIA Grace Blackwell NVL72 architecture delivering over 16X faster time-to-solution.
This paper introduces a "heptalemma" demonstrating that seven plausible theses about physical reality are jointly inconsistent with quantum mechanics while any six are consistent, thereby providing a novel framework for classifying quantum interpretations and diagnosing departures from classicality.
The paper introduces AlphaQubit 2, a scalable neural-network decoder that achieves near-optimal logical error rates for both surface and color codes while enabling real-time decoding faster than 1 microsecond per cycle on commercial accelerators, thereby overcoming previous limitations in speed and accuracy for fault-tolerant quantum computing.
This paper presents algorithms for estimating Detector Error Models (DEMs) directly from syndrome data without decoders, applying them to Google's Willow chips to reveal that while DEMs optimized for syndrome likelihood better predict unseen data, those optimized for logical performance serve as superior decoder priors, while also uncovering long-range correlated measurement errors and unmodeled artifacts like radiation events.
This paper introduces a novel quantum algorithm that achieves a superpolynomial speedup over classical methods by performing the discrete Laplace transform on matrices with polylogarithmic gate complexity and linear qubit width , utilizing Quantum Eigenvalue Transformation and Lap-LCHS to overcome the challenges of non-unitary dynamics.
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.
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.
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 paper identifies a fundamental incompatibility between the non-relativistic limits of the Schrödinger and Klein-Gordon equations, demonstrating that the inclusion of rest energy in the latter leads to distinct phase velocities that cause unique wavefunction attenuation in Sagnac interferometers, a phenomenon absent in the former.
This paper investigates quantum correlations in an axially symmetric qubit-qutrit system and establishes a robustness hierarchy where Bell nonlocality is the most fragile, followed by entanglement (Negativity), while Measurement-Induced Non-locality (MIN) and Uncertainty-Induced Nonlocality (UIN) prove to be the most resilient resources against thermal noise and anisotropy.
This paper proposes and demonstrates an active interference suppression method using deliberately incorporated off-resonant microwave tones to significantly improve the fidelity of frequency-division-multiplexed simultaneous quantum gate operations by mitigating interference and optimizing frequency allocation.
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 study demonstrates the first observation of robust, coherent non-Abelian hadron dynamics on a noisy 156-qubit quantum processor by simulating a 60-site SU(2) lattice gauge theory using a hardware-efficient encoding, successfully capturing meson propagation and breathing modes while outperforming classical approximation methods in the weak-coupling regime.
This paper experimentally demonstrates a 10% quantum advantage in phase sensitivity using a fully fibered, alignment-free Mach-Zehnder interferometer at telecom wavelengths by converting polarization-entangled photon pairs into energy-time entanglement while accounting for all system imperfections without post-selection.
This paper proposes a quantum algorithm utilizing quantum phase estimation, block-encoding, and quantum signal processing to simulate resonant inelastic X-ray scattering (RIXS) spectra for molecular clusters in Li-excess battery cathodes, demonstrating its feasibility and resource requirements for challenging active spaces via the PennyLane platform.
This paper derives the decoherence rate and drag force for magnetic nanoparticles in quantum superposition interacting with thermal electromagnetic fluctuations using the fluctuation-dissipation theorem in the long-wavelength limit, while extending the analysis to systems of adjacent diamagnetic nanoparticles and comparing the results with dielectric properties.
This study characterizes the aging and thermal annealing of Josephson junctions, revealing that their resistance evolution follows a logarithmic curve dependent on fabrication and storage conditions, while thermal annealing in nitrogen consistently lowers resistance compared to ambient conditions, though neither method can reduce resistance below its initial value.