1075 papers
This paper introduces and demonstrates coherent polarization self-rotation (CPSR), a robust two-photon light-matter interaction in dense alkali-metal vapors that enables narrowband magnetic spectroscopy and coherent coupling between light and collective atomic spins, achieving a 10 Hz linewidth and near-unity contrast even under challenging conditions like high buffer-gas pressure and optically thick environments.
This paper proposes using quantum-state discrimination strategies on massive quantum clocks, such as thorium nuclei, within the Parametrized Post-Newtonian formalism to theoretically demonstrate that different metric theories of gravity can be distinguished with high certainty, potentially even with a single detection event or a small ensemble of clocks.
This paper demonstrates that fundamental quantum speed limits, traditionally viewed as computational constraints, can be operationally leveraged in a semi-device-independent prepare-and-measure scenario to generate certified randomness secure against adversaries, even without assumptions about the specific devices or Hamiltonians involved.
This paper compares three probability-conserving formalisms for quantifying measurement precision in non-Hermitian systems, highlighting that while simple normalization can yield unphysical results, the metric formalism offers a coherent framework that naturally extends standard Hermitian metrology tools.
This paper extends the classical Kramers-Henneberger transformation to the quantum regime by treating the trap location as a quantum variable, thereby revealing quantum electrodynamic corrections and proposing an optomechanical realization for simulating these effects using ultracold trapped atoms and ions.
This paper establishes an operational link between discrete generalized measurements and continuous decoherence, demonstrating that a single measurement round can abruptly eliminate quasiprobability negativity in finite-dimensional systems at a critical time that may precede the conventional decoherence time, thereby offering new insights into the quantum-to-classical transition and potential applications in quantum circuits.
This paper proposes a solution to the quantum time of arrival problem for a spinless single particle by constructing an ideal detector model via mathematical probability theory, which ensures positive probability flux and yields a dynamical model based on adapted Madelung equations that is consistent with geometric quantum theory rather than standard quantum mechanics.
This paper establishes the theoretical universality of analog quantum simulators under global control, introduces a direct quantum optimal control framework to bridge theory with experimental reality, and demonstrates the successful engineering of complex multi-body interactions and topological dynamics on a Rydberg-atom array.
This paper presents a realistic implementation of a quantum engine that utilizes the quantum coherence of phaseonium atoms as a thermodynamic resource to enhance efficiency beyond standard thermal limits, demonstrating operational viability through a collision model framework and scalable cascade configurations.
This paper establishes a rigorous mathematical framework for hybrid classical-quantum systems by deriving their microcanonical ensemble via a maximum entropy principle, demonstrating its well-defined nature for continuous energy values and its consistency with the canonical ensemble, while validating the theory through a toy model.
This paper reports the experimental observation and theoretical modeling of self-sustained nonlinear oscillations in a superconducting cavity-optomechanical system driven at the single-excitation level, where a large Kerr nonlinearity lowers the threshold for nonlinear dynamics by four orders of magnitude to enable future quantum applications.
This paper presents a comprehensive physical, mathematical, and software-level description of an entangled photon pair generator based on the biexciton-exciton cascade in semiconductor quantum dots, featuring a compact Kraus operator formalism and a simulation framework capable of modeling diverse excitation strategies for integration into larger quantum optical experiments.
This paper proposes robust protocols using spatially local anyon injection at a single quantum point contact to isolate the universal anyonic statistical phase from nonuniversal interaction effects, deriving novel fluctuation-dissipation relations that allow for the direct experimental measurement of this phase via AC admittance or DC noise.
This paper investigates the exact synthesis problem for the Clifford+R gate set by explicitly characterizing the structure of its underlying Bruhat-Tits building, thereby providing an alternative proof of the gate set's arithmetic nature.
This paper derives a two-parameter Chern-Simons-Schrödinger energy functional to describe interacting anyons in a trap, revealing how their self-generated magnetic flux and spin-orbit interactions lead to nonlinear Landau levels, stable counter-rotating vortices, and a novel supersymmetry-breaking phenomenon.
This paper demonstrates that within the Unified Nonequilibrium Perturbative framework, the anyonic exchange phase in Fractional Quantum Hall edges is fundamentally tied to Luttinger liquid scaling dimensions, yielding unique solutions for both Poissonian and super-Poissonian DC backscattering currents and noise through a derived nonequilibrium fluctuation-dissipation relation.
This paper presents a broadly tunable quantum-enhanced stimulated Raman scattering microscopy platform that utilizes amplitude-squeezed light to achieve a record-breaking 51% signal-to-noise ratio improvement and 3.6 dB noise suppression for high-speed, sensitive imaging of metabolites in biological tissue.
This paper introduces operator-aware shadow importance sampling algorithms that leverage informationally overcomplete positive operator-valued measures to overcome the scalability and accuracy limitations of existing direct fidelity estimation methods, achieving state-of-the-art performance for both Haar-random and structured quantum states.
This paper resolves the apparent contradiction between theory-independent no-go theorems and recent findings by explaining how classical gravity coupled to quantum matter can still induce entanglement, thereby underscoring the critical urgency of experimental investigations into low-energy quantum gravity effects.
This paper demonstrates that repeated weak measurements with post-selection can induce sharp dynamical discontinuities in meter observables of minimal quantum systems, governed by the vanishing imaginary part of complex weak values and characterized by universal critical behavior with a critical exponent of 1.