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 135
Quantum double lock-in detection via sequential orthogonal quantum mixing
High-precision measurement of oscillating signal is a ubiquitous issue in fundamental science and a critical task in practical technologies.Emergent Quantum Geometric Phases in Holey Graphene
In graphene and other two-dimensional materials, periodic modulations of the electron density can significantly alter the energy spectrum and transport properties.Layer codes as quantum memories: syndrome extraction, thresholds and idle robustness
Layer codes are three-dimensional local CSS codes of check weight at most six, obtained by quasi-concatenating a CSS input code with unrotated surface code patches.Optimal local recovery cannot alter critical orthogonality exponents in quantum spin environments
We prove a local amplitude-ratio bound for positive ground states and an explicit reverse comparison for fidelity under finite-region erasure.Boron vacancies in bulk h-BN created by high-energy He+ irradiation
While color centers in diamond and other three-dimensional crystals are nowadays key elements of several types of sensors, color centers in two-dimensional materials are rapidly developing and…Exact Maximum Likelihood Decoding beyond Treewidth via Rank-Decomposition Dynamic Programming
Maximum-likelihood decoding provides an optimal decoding strategy for quantum error correction under stochastic Pauli noise.Rate 1/5 Non-Malleable Codes against Entangled Split-State Tampering
We construct efficient information-theoretic non-malleable codes for classical messages that are secure against two noncommunicating local quantum tampering operations with arbitrary pre-shared…The Complexity of Single-Interaction Hamiltonians
We study the complexity of Local Hamiltonian problems under the restriction that every local term is an unweighted occurrence of the same fixed interaction.Thermodynamics of Ahn--Doherty--Landahl Continuous Quantum Error Correction
Continuous quantum error correction (CQEC) replaces discrete syndrome measurements and recovery operations with continuous syndrome extraction and real-time Hamiltonian feedback.Warm-Start Iterative QITE for Distribution Network Reconfiguration via Branch-Exchange Encoding
We present a hybrid quantum-classical algorithm for distribution network reconfiguration, a combinatorial optimization problem on power distribution networks, that combines a radiality preserving…Weakly Measured Loops for Quantum Amplitude Amplification: Oracle Savings and Adaptive Search with Unknown Target Probability
We present a family of quantum amplitude amplification algorithms that interleave ordinary Grover rotations with tunable weak measurements in loops.Phase-sensitive avalanche quantum sensing of sub-shot-noise fields
Avalanche-based detection of small perturbations is commonplace in precision measurement devices from Geiger counters to single-photon avalanche detectors.QMA(2) with Limited Shared Entanglement
A $\mathsf{QMA}(2)$ protocol involves two provers submitting unentangled witnesses to a polynomial-time quantum verifier.Separable decompositions of 2xn states with operator Schmidt rank three
We prove that every bipartite state $ρ$ of a qubit coupled to an $n$-level system whose operator Schmidt rank equals three can be written as a mixture of $\text{rank}(ρ)$ pure product states, and as…Polylog-depth Quantum Thermal Simulation via Local Recovery Channels
We establish sufficient conditions for preparing quantum thermal states of noncommuting local Hamiltonians with polylogarithmic circuit depth in arbitrary fixed spatial dimension.Scaling Laws of Quantum Networks: An Entanglement Transport Framework
As quantum networks move toward multi-user architectures, a central question is how the performance of entanglement distribution scales with the numbers of network nodes $N$ and active users $M$…Quantum--classical break-even in electronic dynamics of macrocyclic molecules
Here we demonstrate quantum--classical break-even for chemical dynamics applications, reaching useful accuracy with a quantum-hardware wall-clock time comparable to that estimated for practical…The Intrinsic Cost of Quantum Syndrome Extraction
How much time is fundamentally required to extract the syndrome of a stabilizer code on hardware with a given connectivity graph?Complex Quantum Dynamics Versus Classical Simulability of Noisy Random Circuits
Claims of quantum advantage rest on the classical hardness of simulating quantum circuits.What makes a causal loop consistent?
Causal loops escape paradoxes if they generate valid probabilities under arbitrary independent local interventions.