1157 papers
This paper presents a general -algebraic framework for routed device-independent quantum key distribution with multiple switches and local parties, demonstrating that four-party protocols can locally self-test both communicating parties to achieve improved key rates and lower thresholds compared to existing methods.
This paper presents a quantum mechanical framework for acoustoelectric amplification in a piezoelectric-2DEG heterostructure, demonstrating that a 2DEG enables efficient phonon amplification across a broad range of wavelengths and deriving the gain, noise, and saturation characteristics necessary for designing quantum phononic lasers and amplifiers.
This paper proposes and evaluates a hybrid quantum-classical pipeline for consumer classification in the NISQ regime, demonstrating that a quantum-kernel SVM with feature extraction achieves competitive performance and higher sensitivity than classical baselines, thereby serving as a foundational step for integrating shallow-depth quantum workflows into marketing analytics.
This paper proposes a definition for the statistical complexity of single-mode bosonic quantum channels as the maximum complexity they can generate from a minimal-complexity input state, and demonstrates its application by evaluating both Gaussian and non-Gaussian channels using information-theoretic quantities derived from the Husimi Q-function.
This paper demonstrates through large-scale simulations and analytical estimates that superradiance in disordered waveguide quantum electrodynamics remains robust against strong spatial and spectral disorder, driven by a spontaneous self-organization of spins that optimizes constructive interference and leads to mirror-asymmetric correlations.
This paper introduces a simulation framework using STIM to demonstrate that superconducting qubits with physical error rates up to 0.75 can be retained in surface code lattices without significantly degrading logical performance, thereby redefining defectiveness as a spectrum rather than a binary failure state and providing actionable metrics for hardware designers.
This paper demonstrates that the semiclassical Einstein equations naturally emerge from the proportionality between quantum relative entropy and horizon area variations, thereby generalizing Jacobson's thermodynamic derivation by replacing classical entropy with well-defined quantum information measures.
This paper contrasts classical and quantum models of particle-wall interactions within the canonical ensemble to elucidate how surface density correlations, though vanishing in the thermodynamic limit, refine the understanding of its attainment for an ideal gas.
This paper presents a method to map the individual positions of surface two-level-systems (TLS) on a superconducting transmon qubit by utilizing local electric fields from on-chip gate electrodes, revealing that TLS density is significantly enhanced near the Josephson junction leads rather than the larger capacitor area, thereby guiding future qubit design and fabrication improvements.
This study proposes and experimentally demonstrates a highly efficient, current-driven method for switching topological spin chirality in the van der Waals antiferromagnet Co1/3TaS2 via intrinsic self-torque, eliminating the need for external magnetic fields or heavy metals and establishing a practical pathway for chiral spintronics.
This paper presents a numerically stable and flexible framework for simulating decoherence in multifield inflationary models by implementing open-system effects via the Lindblad equation, enabling the study of primordial scalar perturbations without relying on the slow-roll approximation and facilitating compatibility with nonlinear numerical codes.
Challenging previous conclusions that curvature enhances entanglement, this paper demonstrates that while increasing curvature in de Sitter spacetime strengthens correlations between local field modes, it paradoxically decreases their entanglement, revealing a qualitative alteration of the vacuum's entanglement structure by the cosmological constant.
This paper resolves the crisis of bulk-boundary correspondence in non-Hermitian systems by establishing a universal, robust identity between non-Bloch polarization and the entanglement polarization of a quasi-reciprocal Hamiltonian, thereby identifying entanglement as the unique real-space diagnostic capable of capturing non-Bloch topology even when conventional locality-based invariants fail.
This study utilizes exact diagonalization of spectral form factors and power spectra to demonstrate how trapped interacting rotating bosons transition from integrable or pseudo-integrable behavior in moderate interaction regimes to strong quantum chaos consistent with the Gaussian orthogonal ensemble in strong interaction regimes, driven by the interplay between interaction strength and rotational angular momentum.
This paper demonstrates that a single trapped rubidium atom acting as a "quantum jump photodetector" can successfully detect individual narrow-band laser photons embedded in strong sunlight, achieving a communication rate of 0.5 bits per symbol and offering potential applications for daytime LIDAR and free-space optical communications.
This paper presents a new Levi-Civita-based formula for Cayley's first hyperdeterminant that enables polynomial-time computation for symmetric hypermatrices, facilitating applications in bosonic quantum entanglement through the introduction of generalized elimination and duplication matrices.
This paper investigates mediated quantum synchronization in star networks of spin-1 particles, revealing that both identical and nonidentical configurations exhibit distinct transmission behaviors—such as remote and quasi-explosive synchronization—that differ from or extend classical dynamics due to the interplay of phase locking and dissipation.
This paper presents a self-contained, graduate-level guide to the Bogoliubov-Valatin transformation for homogeneous fermionic Hamiltonians, detailing how to diagonalize quadratic Hamiltonians via canonical matrix forms and introducing a novel procedure for handling singular cases.
This paper proposes a highly collision-resistant quantum hash function based on discrete-time quantum walks on Hanoi networks, where message bits control probability amplitude flow and shift operators to enable effective hashing even for small message lengths.
This paper derives explicit analytic sufficient conditions for the Kadison--Schwarz property of unital positive linear maps on by utilizing the Bloch--Gell--Mann representation and Lie algebra structure to reduce the problem to estimates involving only the symmetric tensor , thereby establishing criteria weaker than complete positivity without relying on numerical optimization.