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 169
A Proof of Shor's Orthogonal-Measurement Conjecture and the Structure of Information-Optimal Quantum Measurements
Which quantum measurement extracts the most classical information from an ensemble?Spectral Gap of the Hexagonal AKLT Model via Boundary-State Factorization
We establish a sufficient condition under which overlapping PEPS boundary states satisfy the approximate factorization criterion for a spectral gap.Cubical Sheaf Complexes with Constant Expansion with Applications to Asymptotically Good qLTCs
For every fixed integers $r \ge 4$ and $2 \le k \le r-2$, we construct $r$-dimensional cubical sheaf complexes whose degree-$k$ CSS codes have positive constant rate, linear distance, and constant…Theory of Airy-Beam Wavefront Sensing
A new wavefront sensing framework based on the interference of counter-accelerating Airy beams is presented.Quantum Advantage in Topological Data Analysis via Mayer Homology
Prior work has explored quantum algorithms for topological data analysis (TDA), revealing the possibility of exponential quantum speedups in estimating the ratios of Betti numbers to the dimension…Quantum Metrology for Signals with an Unknown Causal Structure
Quantum sensing protocols usually presuppose where and when each signal acts, yet this information is unavailable beforehand in experiments such as scattering and radar.Non-Hermitian Purcell Physics in Dissipatively Coupled Planar Photon-Magnon Systems
The Purcell effect has emerged as a powerful mechanism for controlling spontaneous emission and dissipation in cavity and nanophotonic systems; however, its realization in dissipative non-Hermitian…Quantum Topological Data Analysis Beyond Betti Numbers: Complexity Hardness $\&$ An Algorithm for Torsion Witness
Recent advances have revealed an interplay between quantum computing and topological data analysis (TDA).Frustration-Free Models for Topological Holography: Fusion Spin Chains as Boundary Algebras
We introduce a class of $2d$ quantum spin systems based on a unitary spherical fusion category with a chosen object.Optimal local oscillators for the homodyne detection of multiphoton states
We propose a framework for optimizing pulsed local oscillators (LO) for homodyne detection of multiphoton-number states by exploiting the tensor structure of their joint-spectral amplitude (JSA).Unbounded Operators, Physicality, and Modality in Quantum Theories
In this paper, I address the problem regarding the physicality of Hilbert space in quantum mechanics, a topic brought into focus by Carcassi et al.'s paper "The unphysicality of Hilbert spaces"…Sub-Doppler cooling of trapped ions using optical tweezers
We propose a sub-Doppler cooling scheme for trapped-ion crystals in Paul traps.Beyond Antibunching: Photon Correlation Analysis Reveals Blinking Origin
A variety of quantum emitters compete in the quest for the best single-photon source for photonic quantum technologies.Circuit-depth optimization of quantum partial-search algorithms
Grover's algorithm is optimal in terms of oracle queries.Distilling Datasets into Shallow Circuits for Quantum Machine Learning
In quantum machine learning, training a quantum model requires each sample to be prepared as a quantum state by a loading circuit that must be re-executed for every shot at every training step.Certifying fermionic Gaussian states (and a little more) with optimal precision dependence
Fermionic Gaussian states are the workhorse reference states for qubit-based quantum simulation of fermionic systems, yet existing certification protocols either proceed via fidelity estimation…Optimal limits on weak integrability breaking and protected thermal memory near qutrit exchange
Although integrability does not universally require a continuous one-site symmetry, we rigorously prove that every jointly analytic, regular Yang-Baxter deformation of the qutrit exchange…Beyond Maximal Entanglement: Exact Resources for Multiparty Encrypted Quantum Cloning
Encrypted quantum cloning distributes an unknown $k$-qubit state among $m$ encrypted clones so that no individual clone reveals the input, yet the state can be recovered from any one clone together…Broadband Quantum Optical Storage with Chemically Engineered Molecular Eu$^\text{3+}$ Complex
Broadband quantum memory devices are essential elements for future quantum networks.Decoherence Tuning in Voltage-Driven Plasmonic Cavities
Strong light-matter coupling offers a powerful framework for modifying molecular structure, dynamics, and optical response, yet achieving this regime at the single-molecule level remains a central…