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 103
Relative-Entropy Flow Across the Page Transition
We develop a computational framework for the quantum relative entropy based on the replica trick and apply it to analyze the evaporation process method of Jackiw-Teitelboim black holes.A 3D-Printed GHz Microwave-Resonator Paul Trap for Electron Confinement and Millisecond Spin-Qubit Coherence
We report a 3D-printed microwave-resonator Paul trap that operates at the GHz frequencies required for electron confinement while preserving an open geometry suitable for laser access and imaging…An unified approach for the (inverted) quantum harmonic oscillator and the Berry-Keating hamiltonian
We propose an unified view to three well known quadratic Hamiltonians widely considered in quantum mechanics, i.e. those of the harmonic oscillator, of the inverted harmonic oscillator, and the…Harnessing Post-selected von Neumann Measurements to Strengthen Entanglement and Quantum Signatures in Coherent States
We investigate how post-selected von Neumann measurements modify the nonclassical properties of two-mode entangled coherent states (ECSs).Quantifying the fidelity of a quantum memory
Quantum memories are key ingredients for future quantum networks.Quantum algorithms for four problems in density peak clustering
Clustering is a fundamental task in unsupervised learning.Exact Catalysis Cannot Overcome the Gaussian-Steering Barrier for Remote Wigner Negativity
Gaussian steering sets a sharp threshold for creating Wigner negativity at a distance.Optimal GHZ extraction from MABK violations
We determine the least Greenberger-Horne-Zeilinger (GHZ) extractability compatible with a Mermin-Ardehali-Belinskii-Klyshko (MABK) Bell score for every number of parties greater than two.Universal critical $g$ factor for spin-1/2 Aharonov-Bohm bound states
Whether the spin-1/2 Aharonov-Bohm Hamiltonian supports bound states has remained controversial since Hagen concluded that no such states exist for a Dirac particle.Physical Design Automation for Planar Superconducting Quantum Chips
Superconducting circuits have emerged as one of the most promising and scalable platforms for quantum com- puting, with substantial industrial adoption driving qubit counts steadily upward.Analytical results for the Shannon entropy of the critical transverse-field Ising chain
Local-basis Shannon entropies of critical wave functions contain universal subleading information, but the Shannon point of the critical transverse-field Ising chain is singular in the conventional…Fault-tolerant resource estimation for ground-state preparation via Lindblad simulation
Recent advances in algorithms for simulating Lindblad dynamics have clarified their theoretical potential for state preparation, but their practicality in the early fault-tolerant regime and beyond…Entanglement Sudden Death: Eberly's Work and the Limits of Local Dynamics
Entanglement sudden death (ESD), explored through a series of works by Yu and Eberly, supports the notion of entanglement vanishing abruptly and completely at a finite time, even when the underlying…Quantum Algorithms for Multivariable Polynomial Transformations: From Efficient Synthesis to Quantum Channel Transformations
Polynomial transformations are basic primitives in quantum algorithms: quantum signal processing and singular value transformation compile univariate polynomials into circuits with query complexity…Efficient Learning of Structured Fermionic States under General Quadratic Evolution
We prove that unknown pure fermionic states prepared from disjoint-branch fixed-particle-number blocks can be reconstructed after general quadratic evolution, including pair creation and annihilation.Entanglement manipulation and magic area-laws
Physical many-body quantum systems typically interact locally, giving rise to ground states where entanglement grows with the area of the region being probed.No-Disturbance-without-Uncertainty generates the Quantum set in the simplest Bell scenario
Characterizing the set of quantum nonlocal correlations through information-theoretic constraints is a central problem in quantum foundations.Complexity of self-consistent entanglement certification
In recent work Phys.Observing the magic Mpemba effect in localized dynamics on a digital quantum computer
The Mpemba effect challenges the intuition that states closer to equilibrium must relax faster.Energy-constrained two-way capacity bounds for noisy Gaussian channels
A gap between achievable rates and converse bounds persists for energy-constrained bosonic communication in the presence of excess noise.