1134 papers
This companion paper details the geometric and computational framework behind numerical solutions to the spherical grasshopper problem, analyzing optimal lawn configurations and their significance for approximating quantum singlet correlations through spherical harmonics and connections to geometric probability.
This paper presents an efficient closed-loop optimization method for two-qubit gates in nitrogen-vacancy centers that evaluates gate performance using only two quantum states, reducing the required measurements by two orders of magnitude compared to standard process tomography.
This paper investigates a massless Dirac field confined between two parallel walls in dimensions, demonstrating that the field's parity under midplane reflection determines whether the resulting Casimir force is attractive or repulsive and governs the symmetry of associated vacuum-induced currents, including a transverse Hall-like current in 2+1 dimensions.
This paper presents a quantum sensing protocol that achieves ultimate precision in estimating the three-dimensional momentum difference between two photons using spatially resolved two-photon interference, requiring only approximately 2,000 sampling measurements with less than 1% bias.
This paper demonstrates a scalable quantum photonic platform by heterogeneously integrating high-Q diamond photonic crystal cavities with a thin-film lithium niobate backbone, enabling efficient, low-loss photon transfer and collection from silicon vacancies for practical quantum networking.
This paper extends communication-based approaches to distinguish quantum theory from broader probabilistic frameworks by systematically characterizing relevant communication tasks and deriving new operational constraints that reveal a broad family of previously undetected implausible behaviors, thereby reinforcing communication as a fundamental lens for identifying physically meaningful theories.
This paper demonstrates that in quantum group-deformed spin systems, conventional local measurements on a Bell singlet state introduce deformation-dependent biases, which can only be resolved by adopting a symmetry-covariant, braided notion of locality that restores unbiased statistics while preserving perfect anticorrelation.
This paper introduces a symmetry-based multi-reference perturbation theory (SBPT) that leverages enhanced symmetries in a reference Hamiltonian to significantly reduce computational costs in both classical configuration interaction and quantum computing applications, while offering scalable solutions and improved robustness for various molecular systems.
This paper characterizes and upgrades a hybrid quantum-classical graph neural network for charged particle track reconstruction in high-luminosity LHC environments, demonstrating improved training convergence and behavior through the integration of parametrized quantum circuits.
The paper introduces Metriq, an open-source collaborative platform that unifies benchmark definition, execution, and data collection to enable reproducible, cross-platform performance assessment of quantum computers through a diverse suite of metrics and a composite Metriq Score.
This study demonstrates that a mesoscopic Fermi gas in a high-finesse cavity exhibits a non-monotonic superradiant threshold driven by a crossover between Fermi pressure-assisted ordering and Pauli blocking, while also enabling the observation of spin-density-wave phases through spin-dependent light-induced forces.
This paper demonstrates that state-of-the-art superconducting quantum processors, utilizing the SqDRIFT algorithm, can reliably simulate the electronic structure of a half-Möbius topology molecule with active spaces up to 50 orbitals (100 qubits), marking a significant step toward practical large-scale quantum chemistry applications.
This paper proposes a scalable postselection method for quantum computing that utilizes decoder soft information and a new "partial gap" metric to directly postselect size-extensive sub-circuits, achieving a fourfold reduction in overhead for logical gates while maintaining the same logical error probability.
This paper introduces a novel logical framework featuring four distinct negations by generalizing spectral presheaves to arbitrary complete orthocomplemented lattices, thereby constructing Akchurin algebras that model a product of biquasiintuitionistic and biintuitionistic logics while demonstrating the impossibility of interpreting the spectral presheaf as a model for relevance logic.
This paper demonstrates that in one dimension, every approximate quantum cellular automaton on a finite system can be rounded to an exact quantum cellular automaton with nearly identical local action, thereby proving that approximate QCAs are classified by the same index as exact ones through a novel local construction based on robust subalgebra intersections and Kitaev's rigidity theorem.
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 proposes a continuous-time, dissipative Markov dynamics driven by local two-body swap operators that asymptotically drives a network of quantum systems to permutation-invariant states, enabling applications such as global pure state generation and network size estimation.
This paper demonstrates that a specific subclass of Goldilocks quantum cellular automata is integrable and mappable to free fermions through two distinct proofs, enabling classical simulation and providing a tunable parametric circuit for testing quantum hardware, while contrasting these with typically non-integrable variants that still conserve a quantity useful for error mitigation.
This paper presents a feasibility study for a table-top nanodiamond interferometer that utilizes quantum superpositions of massive objects and small-range electromagnetic fields to enable more accessible and resource-efficient experimental tests of the quantum nature of gravity.
This paper investigates the adversarial robustness of partitioned quantum classifiers by demonstrating that perturbations targeting circuit partitioning techniques, such as wire cutting or teleportation, are equivalent to implementing adversarial gates within intermediate layers, a relationship analyzed through both theoretical and experimental perspectives.