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 167
Optimal noisy sequential multiparameter quantum sensing
The most general strategy for estimating parameters of a quantum channel is to probe the channel many times sequentially with the help of coherent ancillary systems.Three-uniform edge-ordered hypergraph quantum states: entanglement and its relation to hypergraph properties
The encoding of 3-uniform edge-ordered weighted hypergraphs into multiqubit quantum states is proposed.Generation of Photonic Graph States with minimal number of quantum emitters
Graph states are a fundamental resource for measurement and fusion-based quantum computing, quantum networks, and sensing.Planar Contact Structures with Calabi-Yau Fillings and Topological Quantum Computation
We study planar openbooks obtained by lifting braids through branched covers of D^2, together with the quantum operations in the Ising representation.Construction of Partial Join Graphs with Perfect State Transfer in Shunt Decomposition-Based Quantum Walks
In this paper, we define directed partial join graphs with signed couplings and construct discrete-time quantum-walk transition operators for these graphs using the shunt-decomposition framework.Disentangling Expressibility, Symmetry Protection, and Hardware Noise in Variational Quantum Simulation of the Two-Flavor Schwinger Model
Existing quantum simulations of the two-flavor Schwinger model have run at a single lattice size, and it is not known how far the variational approach can be pushed or which weakness stops it first.Encryptability As a Coordinate Choice: Depth-One Homomorphic Federated Learning of Quantum Neural Networks
Encrypted training relies on keeping server-side updates low-degree.A Novel $q$-Derivative Framework with Applications to $q$-Deformed Thermodynamics and Leakage Suppression in Superconducting Qubits
We propose a new $q$-derivative operator built directly from Jackson's $q$-number formulation, designed to preserve the structural properties of standard differential calculus while incorporating…The "Gate of Fate" - a quantum gaming concept
Quantum physics underpins the emerging quantum technology era, yet its counterintuitive principles remain challenging for beginners.Exact replica-sector hierarchy of multi-resolvent correlations in random free fermions
The spectral weight with which a many-body eigenstate contributes to a given channel is not fixed by the smooth one-point ETH envelope, and its higher-order correlations---the connected cumulants of…Exact Critical Curve for Uniform Stabilizer-State Identification
The sample complexity of identifying an unknown pure stabilizer state has been a longstanding problem in quantum information.Frame dependence of Kochen-Specker contextuality for relativistic spin systems
We ask whether Kochen-Specker contextuality is Lorentz invariant.Sample-Efficient Tomography of a Class of Mixed States with Extensive Entanglement and Magic
Full tomography of a generic many-qubit quantum state requires exponentially many copies, while suitable structural constraints can make reconstruction sample-efficient.Emergent Prethermal Symmetries for Scalable Hamiltonian Learning
Learning an interacting many-body Hamiltonian at the Heisenberg limit generally requires control that preserves local information for evolution times of order $1/\varepsilon$ to attain $\varepsilon$…Quantum Channel Stein's Lemma with an Exponential Strong Converse
We establish the quantum channel Stein lemma at every fixed type-I error tolerance in $(0,1)$ and prove an exponential strong converse under arbitrary adaptive strategies.Optimising Cryogenic Wiring for Microwave-frequency Millikelvin Quantum Processors
Cryogenic capacity is a key bottleneck in the scaling of superconducting quantum processors, critically impacted by control wiring.Minimal representations of topology-preserving quantum-like states
We provide an equitable partition that gives an exact, minimal representation for the graph Cartesian product formed from quantum-like bits that preserves the relevant spectral and topological…Limits for molecular spectroscopy from quantum channel discrimination
Absorption spectroscopy identifies molecules by detecting frequency-dependent optical loss, and its fundamental limit is a quantum channel-discrimination problem.Higher-order Spatially Separated Correlations and Quantum Magic in the Long-range Transverse Field Ising Model
Long-range interacting quantum systems exhibit interesting phenomena beyond the nearest-neighbours regime.Antiblockade Quantum Batteries
Blockade, a phenomenon in which one particle hinders the transport of another, constitutes a core research topic in mesoscopic and microscopic physics.