Quantum Physics · Physics & Astronomy
Quantum Physics
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3,630 papers, from 4 September 2026 to 5 November 2026: 3,630 arXiv preprints.
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Newest papers, page 70
Finite-Frequency Boson-Number Bounds Across the Quantum Rabi Transition
We consider the quantum Rabi model, a fundamental model of quantum optics describing a two-level system coupled to a bosonic mode, including counter-rotating terms.Reducing the Cost of Qudit State Preparation by Learning a Sparse Structure for SNAP Gates
Preparing quantum states in bosonic qudits with SNAP--Displacement sequences requires both optimizing the gate parameters and deciding which Fock levels should be controlled by each SNAP gate.Time-optimal robust quantum control for partially known errors
Robust quantum control usually assumes one of two extremes: the error is of a known form and only its strength is unknown, or nothing at all is known about it.Practical Fidelity Estimation for Noisy Quantum Devices Using Direct and Survival-Probability-Based Protocols
Reliable characterization of quantum states and quantum processes is central to the development of scalable quantum computing.Driving the cooling process of a quantum system via classical noise
It is known that under particular hypotheses anomalous thermalization processes can occur, such as the Mpemba effect, consisting in a faster cooling down when the system is prepared in a hotter…Fast, parallel, three-dimensional rearrangement of atom arrays using superpositions of elementary holograms
Assembling defect-free arrays of neutral atoms requires real-time rearrangement of stochastically loaded optical tweezers.Finite-size geometric crossover toward fragmentation of the potential energy shell in the quantum random energy model
The quantum random energy model (QREM) is a paradigmatic model for studying delocalization-localization transitions at finite energy density in Fock space.Theory of Dispersion and Exchange Interactions Subjected to Surface Roughness in Application to Signal Transmission through a Nanoswitch
We present the theoretical description of a resistive nanoswitch designated for a change-over between the two operation modes by calculating the electri elastic, dispersion (van der Waals and…Diffusion Language Models as Open Quantum Systems
Diffusion language models generate text by reversing a classical diffusion process over token sequences.Quantum instanton approach to metastable collective spin systems: Numerical implementation and applications
Driven-dissipative collective spin systems can host several long-lived metastable states; rare switching between them governs slow relaxation and first-order dissipative phase transitions associated…Correlation between normal character and Raman intensities of isotopologues of carbon dioxide
Previous studies on the vibrational structure of carbon dioxide isotopologues have revealed a correlation between the strength of Fermi interactions and a recently defined normal-mode parameter.Size-Dependent High-Order Harmonic Generation from Linear Carbon-Chain Molecules in Linearly Polarized Laser Fields
High-order harmonic generation from molecules is highly sensitive to molecular geometry and strong-field electron dynamics, providing a powerful route for probing and controlling ultrafast processes…Realization Divergence in Multi-Provider Quantum Computing: A Pre-Registered Study of What Survives Measurement
Quantum programs pass through compilers, transpilers and vendor services before execution.Operator-Space Entanglement Entropy in Random Fermionic Gaussian Dynamics
We study the von Neumann operator-space entanglement entropy (OSEE) of initial product operators evolved under random gaussian dynamics, as modeled by a Brownian SYK$_2$ model.Remote Gottesman-Kitaev-Preskill Entanglement Generation between Trapped Ions
Distributing entanglement directly between error-corrected logical qubits is an important capability for scalable quantum networks.Probing Deconfined Quantum Criticality Point on a Digital Quantum Computer
A deconfined quantum critical point (DQCP) is a continuous transition between ordered phases with unrelated broken symmetries, beyond the Landau-Ginzburg-Wilson paradigm.Local finite rate semi device independent randomness expansion from quantum contextuality
Finite rate randomness expansion (RE) which is secure against quantum adversaries is a crucial information processing task which is well studied in the case of two non-communicating parties sharing…Same Spectrum, Harder First-Order Training: Phase-Locking in Single- versus Multi-Qubit Re-Uploading Circuits
Angle-encoded variational quantum circuits implement truncated Fourier series.Quantum-compatible Riemannian conjugate gradient for ground-state preparation
Riemannian optimization provides a natural geometric framework for designing quantum algorithms for ground-state preparation, most notably through quantum imaginary-time evolution.Hankel Submatrices with Bounded Word Length: Dimension Tradeoffs in Probabilistic and Quantum Automata
We characterize the largest admissible side length of fixed-margin square Hankel submatrices generated by probabilistic realizations on a \(d\)-point carrier and quantum linear realizations on a…