1134 papers
This study develops a rigorous, nonperturbative framework to quantify how mirror birefringence and polarization misalignment degrade sensitivity in axion-like particle searches, revealing that while misalignment effects can be mitigated through postselection, birefringence introduces a distinct high-mass resonance peak that necessitates careful consideration in high-precision optical-cavity experiments.
This paper establishes universal principles and practical frameworks for simulating non-Abelian gauge theories on quantum computers by demonstrating that both gauge-singlet and non-singlet representations are valid, offering efficient circuit constructions, error analyses, and resource estimates for real-world QCD applications.
This review paper demonstrates that six specific two-dimensional quantum superintegrable systems in flat space are exactly solvable and share a common hidden Lie algebraic structure, characterized by polynomial eigenfunctions, infinite flags of invariant subspaces, and finite-order polynomial algebras of integrals.
This paper introduces a two-tooth bosonic quantum comb framework that utilizes sequential interactions between a thermal absorber and a coherent probe to characterize temporal correlations in bosonic environments, enabling the discrimination between Markovian temperature noise and structured fluctuations through non-monotonic memory responses.
This paper develops a general canonical quantization scheme for -essence cosmology using the Dirac-Bergmann algorithm to derive a Wheeler-DeWitt equation, which is then applied to a tachyonic field model to investigate phantom crossing via quantum tunneling and the effects of boundary conditions on singularity avoidance and expansion rates.
This paper introduces a convergent hierarchical method based on multiple copies of a pure state to compute the maximal overlap with product states, thereby enabling the calculation of the geometric measure of entanglement and providing powerful tools for stochastic local transformations, entanglement witnessing, and separability testing in multiparticle quantum systems.
This paper investigates how the parameters of phase contrast imaging in cold atom systems influence both the observation and the backaction on a Bose-Einstein condensate array, revealing regimes where the measurement selectively probes bare particles or quasiparticles while offering control over measurement-induced quasiparticle creation and diffusion.
This study demonstrates that while the intrinsic parameters of transmon qubits remain stable over a year of thermal cycling, the surrounding noise environment undergoes a stochastic "hard reset" after each cycle, necessitating automated recalibration strategies for large-scale quantum processors.
This study proposes a novel, tighter generalized entropic uncertainty relation for multi-measurements in many-body systems and applies it to Schwarzschild black holes to reveal the exact equivalence between entanglement and -norm coherence in GHZ-type states, while demonstrating how increasing Hawking temperature degrades quantum coherence and maximizes measurement uncertainty.
The paper introduces QTabGAN, a hybrid quantum-classical generative adversarial network that leverages the expressive power of quantum circuits to synthesize realistic tabular data, demonstrating significant performance improvements over state-of-the-art models in scenarios with scarce or privacy-restricted data.
This paper demonstrates that spatially localized free-space electromagnetic wavepackets inherently exhibit a subluminal group velocity and a superluminal phase velocity whose product equals , a conclusion validated through classical field theory, scalar wavepacket analysis, and quantum-mechanical formalism.
This paper introduces generalized measurement theories (GMTs) as a complementary framework to general probabilistic theories to rigorously demonstrate that measurements must be composed of effects whenever probabilistic states can distinguish between different measurements, a condition argued to be physically well-motivated.
This paper introduces a quantitative non-commutative index to demonstrate that the emergence and critical transition point of volume-law entanglement in measurement-only models are governed by a universal linear scaling of critical non-commutativity with measurement range, independent of microscopic details.
This paper demonstrates the generation of orbitally resolved single-photon emission from individual atomic vacancy centers in a semiconductor by utilizing a scanning tunneling microscope to achieve sub-nanometer spatial resolution and electrical addressability, thereby advancing the development of solid-state spin-photon interfaces.
This paper proposes a cross-cavity system of four-level atoms that achieves steady-state superradiance through collective dissipation and pumping, resulting in nonclassical states with strong spin-momentum and particle-particle entanglement that enable quantum-enhanced acceleration sensing.
This paper presents a polynomial-complexity method for calculating algebraic entanglement entropy in symmetric many-body systems by leveraging Lie group irreducible representations to block-diagonalize reduced density matrices, thereby capturing linearly growing entanglement that typically requires exponential resources to simulate.
This paper introduces a dynamic Bayesian network-based measurement scheme that preserves quantum coherence and minimizes backaction to accurately determine work statistics in coherent engines, overcoming the limitations of standard protocols that can disrupt engine operation and invalidate universal fluctuation bounds.
This paper presents an analytical protocol for implementing Barenco-type multi-qubit controlled gates, including CNOT and Toffoli gates, on driven two- and three-qubit spin chains by deriving effective Hamiltonians through unitary transformations and rotating-wave approximations, which numerical simulations confirm achieve high fidelity and robustness for quantum information processing.
This paper presents an exact mode decomposition of the tripartite information for free fermions on two-dimensional lattices, identifying a universal entanglement coefficient derived from the sine kernel that governs scale-dependent monogamy of mutual information and entanglement singularities at Lifshitz transitions.
This paper demonstrates that Bayesian post-correction of non-Markovian errors in bosonic lattice gravimetry via in situ measurements can recover Heisenberg-limited precision, provided the number of trapping modes is at least two greater than the number of independent error sources.