948 papers
This study demonstrates the feasibility of using tungsten disilicide (WSi2) as a two-level system for X-ray quantum optics by employing high-resolution resonant inelastic X-ray scattering to resolve a sharp white line and a discrete 2p-5d transition at the W-L3 edge, overcoming challenges posed by natural linewidth broadening.
This paper provides a mathematical justification for the symmetrization postulate in three-dimensional quantum mechanics by demonstrating that, for a system of N identical particles with a continuous wave function and an exchange-invariant potential on a connected configuration space, the requirement of time-invariant probability density under particle exchange necessitates that the wave function be either totally symmetric or totally antisymmetric.
This paper investigates interacting waveguide QED systems where the competition between attractive Jaynes-Cummings binding and repulsive Kerr nonlinearities leads to a rich phase diagram featuring Mott-like insulating and superfluid phases in periodic arrays of atomic impurities.
This paper proposes enhancing the security of quantum token protocols across preparation, storage, and verification stages by utilizing hybrid spin-photon interfaces in diamond that leverage high-fidelity tripartite entanglement, Bell state measurements, and coherent spin quantum memories.
This paper introduces Multi-tasking Quantum Annealing (MTQA), a method that embeds multiple optimization problems into spatially distinct regions of quantum hardware to achieve comparable solution quality to single-task approaches while significantly reducing time-to-solution and improving resource utilization.
This paper demonstrates a scalable, broadband on-chip source based on thin-film lithium niobate that generates telecom-band four-photon entanglement with high brightness and fidelity, establishing a practical route for dense wavelength-multiplexed quantum networks.
This paper demonstrates that verifiable delegated quantum computation protocols relying solely on the cut-and-choose technique cannot simultaneously achieve both security and efficiency, indicating that additional methods beyond this approach are necessary for practical implementation.
This paper investigates the thermodynamic properties of a spin-1/2 Dunkl-deformed Pauli oscillator in two dimensions under an Aharonov-Bohm flux, revealing that the interplay between reflection symmetry and topological gauge effects produces distinctive thermal behaviors, including a flux-controlled Schottky-type anomaly in heat capacity.
This paper investigates the Jaynes-Cummings-Holstein model under anti-adiabatic conditions and demonstrates that strong qubit-phonon coupling, through polaronic dressing, effectively suppresses detuning effects and significantly reduces non-Markovian information backflow compared to the standard Jaynes-Cummings model.
This paper presents an elementary asymptotic approach to the Landau-Zener problem using linearly independent waves with quadratic and logarithmic time-dependent phases, which not only reproduces the exact solution's features in the infinite past limit but also provides deeper insights into the origin of the transition probability and the structure of corrections for finite initial times.
This paper introduces Cluster-Adaptive Sample-Based Quantum Diagonalization (CSQD), a hybrid quantum-classical method that employs unsupervised learning to cluster measurement samples and apply cluster-specific particle-number recovery, thereby significantly improving ground-state energy estimates for strongly correlated systems like dissociating N2 and [2Fe-2S] clusters compared to traditional global-reference approaches.
This paper introduces Fictitious Copy Quantum Error Mitigation (FCQEM), a novel technique that corrects quantum errors and recovers exact eigenvalues using only classical post-processing of joint probability distributions derived from single noisy circuit measurements, thereby eliminating the need for additional quantum resources while enhancing other mitigation methods like Quantum Computed Moments.
This paper resolves an open problem by demonstrating that incoherent operations (IOs) enable state transformations forbidden under dephasing-covariant incoherent operations (DIOs), while also showing that existing monotones are insufficient to fully characterize state convertibility under either strictly incoherent operations (SIOs) or DIOs.
This paper introduces a position-encoding framework that enables the efficient simulation of hybrid oscillator-qubit quantum processors on qubit-only systems with polylogarithmic gate complexity, offering an exponential improvement over traditional Fock basis methods and demonstrating that hybrid algorithms can be implemented with polynomial overhead.
This paper proposes a sub-Heisenberg phase estimation protocol using a single beam splitter and two single-mode squeezed vacuum states, demonstrating that ultra-precise measurement can be achieved by saturating the quantum Cramér-Rao bound through intensity detection of nonclassical, parity-defined states without relying on mode entanglement.
This paper conjectures analytic expressions for the non-local magic of bipartite pure qudit states with prime local dimensions, supported by numerical evidence for qutrits and ququints, while demonstrating that these expressions fail for composite dimensions and that established qubit relations between non-local magic and entanglement do not generalize to higher-dimensional systems.
This paper proposes a deep reinforcement learning framework that optimizes time-dependent control Hamiltonians to rapidly and efficiently prepare high-fidelity quantum critical states, overcoming the limitations of adiabatic processes in systems like the quantum Rabi model.
This paper proposes an optimized parameter segmented sequence (OPSS) strategy that significantly enhances the robustness of high-order multiphoton quantum resonances against detuning errors, thereby expanding the parameter window for high-fidelity state transfer and stable photon flux generation.
The paper demonstrates that for any dimension , the existence of complex equiangular unit vectors implies the existence of such a set where all vector coefficients lie within a number field, a result motivated by the construction of SIC-POVMs in quantum physics.
This paper demonstrates that Newtonian motion of macroscopic particles emerges from the linear Schrödinger equation with a Gaussian Unitary Ensemble random Hamiltonian, where the interplay between state-space random walk parameters and the treatment of indistinguishable states as equivalence classes explains the transition from microscopic to macroscopic behavior.