1134 papers
This paper derives simple necessary conditions on transition rates for the Markovian Mpemba effect in multi-level systems, demonstrating that multiple thermalization time scales enable the anomaly while ruling out sub-Ohmic and Ohmic spectra as candidates due to the maximum entropy principle.
This paper refutes the long-standing conjecture that positive-energy Dirac wave functions possess a positive lower bound on position uncertainty by providing a rigorous proof that such states can indeed have arbitrarily small position uncertainty, thereby correcting a gap in a previous counter-example by Bracken and Melloy.
This paper analyzes and mitigates spatial-spectral correlations in Spontaneous Parametric Down Conversion (SPDC) sources to engineer bright, high-purity Orbital Angular Momentum (OAM) entangled photons, thereby enabling scalable high-dimensional quantum technologies without the need for lossy filtering.
This paper proposes a waveguide-QED system using a left-handed transmission line to achieve native long-range light-matter interactions, where the resulting synthetic photonic lattice exhibits algebraic localization and accelerated photon propagation, offering a pathway for tunable multi-qubit information processing.
This paper demonstrates the first end-to-end fault-tolerant execution of error-corrected quantum algorithms (QAOA and HHL) on Quantinuum trapped-ion processors using the Steane code, achieving near-break-even performance and showing that active error correction can improve algorithmic results despite increased physical circuit complexity.
This paper presents computationally efficient higher-order mean-field and perturbative analytical methods to model photon statistics and radiation dynamics in chiral waveguide QED systems, successfully capturing complex many-body correlations and benchmarking against experimental results where exact treatments are infeasible.
This paper establishes that the quantum Cramér-Rao bound on the quantum metric constitutes a multi-observable uncertainty relation, which generalizes the Robertson-Schrödinger relation and is validated through applications to spin operators in three-dimensional topological insulators under a magnetic field.
This paper establishes that the robustness of any non-classical quantum resource serves as a thermodynamic currency, quantifying both the enhanced work extraction achievable from such states and the increased thermodynamic cost required to prepare them compared to free states.
This paper highlights the reciprocal relationship between quantum foundational inquiries and technological advancements, illustrating how philosophical questions evolved into practical quantum technologies while new devices simultaneously enable deeper experimental tests of fundamental principles ahead of the 2025 International Year of Quantum.
This paper proposes a unified microscopic mechanism for both integer and fractional quantum Hall effects by demonstrating that boundary-induced quantization of edge states, through specific boundary conditions and weak parity-breaking interactions, naturally generates the observed hierarchy of Hall plateaus within standard quantum mechanics without requiring separate theoretical frameworks.
This paper demonstrates a quantum-enhanced time synchronization protocol for an N-user star network using entangled photons, achieving picosecond-level precision and frequency skew estimation that improves upon GPS alone by three orders of magnitude, thereby enabling full network synchronization without a central clock.
This paper presents exact analytical solutions for photon statistics in waveguide quantum electrodynamics within the thermodynamic limit, demonstrating that a second-order mean-field method captures exponentially enhanced superradiance followed by subradiance, while revealing that shot-to-shot fluctuations vanish and second-order coherence becomes trivial as the number of atoms approaches infinity.
This paper introduces the SQUINT framework, which integrates molecular electron spins with ultrasensitive mechanical readout and a modified XYXY decoupling sequence to achieve long coherence times and enable direct, chemically tunable quantum sensing of local magnetic fields and nuclear-spin ensembles.
This paper presents an experimental demonstration of programmable continuous-variable–discrete-variable quantum simulation of anharmonic dynamics in a trapped-ion system, utilizing a bosonic-quantum-signal-processing subroutine to synthesize tunable double-well potentials and control wavepacket tunneling.
This paper presents and validates quantum algorithms based on Grover's search that solve the NP-complete Network Signal Coordination (NSC) problem and its robust variants, achieving quadratic speedups and maintaining efficiency even when the solution space fraction decays polynomially with network size.
This paper proposes a robust, Hamiltonian inverse engineering-based approach to realize high-fidelity, composite two-qubit gates in silicon double quantum dots with fewer operations and enhanced resilience against systematic errors, offering a generalizable pathway for scalable quantum computing.
This paper demonstrates that a driven-dissipative cavity-magnonic dimer exhibits multistability and magnon self-trapping due to the interplay between Kerr nonlinearity and photon tunneling, with critical slowing down and sharp increases in quantum fidelity and mutual information serving as distinct signatures of its symmetry-broken phases.
The paper introduces "Macromux," a scalable, resource-efficient postselection scheme that significantly boosts the error thresholds of fault-tolerant quantum protocols—particularly in photonic architectures—by utilizing hierarchical constant-overhead postselection to achieve record-breaking performance against both Pauli and erasure errors.
This paper introduces a general quantum weight reduction procedure for arbitrary CSS codes that utilizes surface code patches to form a "Layer Code," achieving lower check weights and qubit degrees than existing methods while being well-suited for modular architectures with long-range interconnects.
This paper presents a unified Lie-algebraic framework for engineering Hamiltonian-driven quantum dynamics that enables resource-efficient parallel simulation, preserves full controllability under realistic constraints, and facilitates symmetry-based dynamical reduction through systematic algebraic restructuring.