1074 papers
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 establishes a geometric duality between linear beam splitters and nonlinear optical parametric amplifiers via Wick rotation, enabling the exact simulation of parametric down-conversion amplitudes on digital quantum hardware using only native single-qubit unitaries and measurement-based primitives.
This paper demonstrates that within a hybrid framework where no quantum correlations are generated, the conservation of additive observables strictly forbids a classical gravitational field from transferring momentum or energy to a quantum system, thereby implying that observed gravitational back-action necessitates the non-classicality of gravity.
This paper introduces VyZX, a verified library and IDE-integrated visualizer that enables formal reasoning about inductively defined graphical languages, specifically demonstrating its application to prove the soundness of ZX-calculus rewrite rules for quantum computation.
This paper proposes a flexible quantum data bus architecture for multi-path entanglement routing in quantum networks, demonstrating how a pre-prepared 2D cluster state can enable parallel, on-demand connections between multiple groups of parties through local measurements that preserve the underlying entanglement structure.
This paper establishes new separations between shallow quantum and classical constant-depth circuits, demonstrates that with infinite gate sets can implement threshold gates to equal , and shows that higher-dimensional qudit circuits offer no computational advantage over standard qubit implementations in this infinite-size setting.
This paper addresses the challenge of fluctuating decoder demand in quantum error correction by proposing a two-level framework managed by a quantum operating system that treats decoders as shared accelerators, thereby reducing hardware requirements by 10–40% and making fault-tolerant quantum computing more practical.
This paper demonstrates that within a transition probability framework for generalized probabilistic theories, the postulate of bit symmetry implies the symmetry of transition probabilities, which, when combined with a strong symmetry condition on frames, restricts valid models to classical theories and simple Euclidean Jordan algebras.
This paper introduces a novel single-layer quantum neural network that leverages Lie algebraic properties of the Standard Recursive Block Basis (SRBB) to exponentially reduce CNOT gate counts for scalable unitary synthesis, demonstrating its effectiveness through simulations on up to 6 qubits and validation on real quantum hardware.
This paper introduces a path integral-based method to directly compute reduced density matrices in open quantum systems, applying it to a scalar field model and a neutrino toy model to demonstrate how initial Fock state correlations and lighter neutrino masses lead to significant distortions in particle number probabilities due to environmental interactions.
This paper introduces deformations of the symmetric subspace of multi-qubit systems by promoting the underlying group structure to the quantum group , demonstrating that these deformations correspond to local, position-dependent modifications of the inner product for each spin.
Using large-scale quantum Monte Carlo simulations, this study reveals that infinite-range light-matter interactions in frustrated Rydberg atom triangular arrays lift ground-state degeneracy to induce a novel superradiant clock phase, replacing fragile classical order-by-disorder with a first-order transition driven by nonzero photon density and nonlocal ring exchange interactions.
This study provides the first direct evidence of a tunable Quantum Anomalous Hall state with spontaneous ferromagnetism in twisted bilayer WSe2 by utilizing polarization-resolved attractive polaron spectroscopy to observe time-reversal symmetry breaking and confirm a Chern number of C=1.
This paper derives and analyzes the Wigner eigenfunctions for a free quantum particle on a plane by examining two distinct cases—fixed energy with angular momentum and fixed Cartesian momentum—utilizing a specialized coordinate system and the Fedosov algorithm to establish the Moyal star-product and identify the relationship between these two representations.
This paper argues that the Bell inequality reflects a distinction between individual nature and population dynamics rather than proving nonlocality, concluding that quantum correlations in Bell tests are fully explained by local causality and do not violate special relativity.