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 113
The power of time reversal in Hamiltonian property testing
Quantum algorithms enable Heisenberg-limited scaling across many tasks in sensing and learning, achieving precision $\varepsilon$ using $O(1/\varepsilon)$ total evolution time.Arbitrary-phase CZ gate and remote readout across spatially separated superconducting nodes
Establishing a complete set of gates across spatially separated quantum nodes is fundamental for distributed quantum computation and communication networks.Process tensor simulations of non-Markovian open quantum systems with large uncoupled subspaces
Process tensors in matrix product operator representation (PT-MPOs) are a powerful tool to calculate the temporal evolution and multi-time correlations of open quantum systems.Onset of a quantum Fisher-Selke sequence in the transverse-field ANNNI model and its bilayer
We study the transverse-field axial next-nearest-neighbor Ising (ANNNI) model on the square lattice and on a bilayer.Phase-controlled recoverable entanglement in accelerated detector registers
We study recoverable entanglement in a four-qubit cluster-state register whose two detector qubits couple to a scalar field.The quantum-classical bipartite universe and the logical emergence of $\hbar$ from classical temporality
We present a foundational reinterpretation of quantum dynamics based on the standard von Neumann formalism, positing a structural logical bipartition between a classical observational environment…JAQSI: Just Another Quantum Simulator
Classical simulation supports the development and validation of quantum algorithms through full-state inspection, controlled noise models and backpropagation, albeit for small quantum systems.The magic cost of fermionic randomness
Sampling-based quantum advantage raises a basic resource question: how much non-Gaussianity is needed to reproduce the random-matrix statistics often associated with quantum chaos?Training Variational Quantum Algorithms Is NP-Hard, Even Locally
Variational quantum algorithms (VQAs) generally rely on classical optimization to train parameterized quantum circuits.The diffusive spectral gap of the qubit eSWAP chain
We prove that the second-moment Hamiltonian of the open qubit eSWAP chain has a diffusive spectral gap, resolving a conjecture of Li, Zheng, Liu, Jiang, and Liu.On the Completeness of Quantum Mechanics: Sources, Records and Probabilities
Can quantum mechanics be complete without being fundamental?Error-Transparent Code Switching Between Permutation-Invariant Codes with Transversal Clifford and Icosahedral Gates
Code switching moves an encoded qubit between two codes whose transversal gates together are universal, but the switching operation itself is usually not transversal and can spread a single fault…Universal and rigorous asymptotic convergence of standard macroscopic quantum electrodynamics to the modified Langevin noise formalism
The standard Langevin noise formalism (LNF) is a well-established approach for macroscopic quantum electrodynamics in unbounded lossy media, and accordingly, its application to finite objects…Radio-frequency electron cascade in semiconductor quantum dots
Electron cotunneling in semiconductor quantum dots is a higher-order tunneling mechanism that connects initial and final charge states through energetically inaccessible virtual intermediate…Theory of the Edge-of-Chaos Advantage in Quantum Reservoir Computing
Numerical studies suggest that quantum reservoir computing performs optimally near the edge of chaos, a behavior commonly attributed to a balance between memory retention and nonlinear information…Cups and Gates II: Operads, twists, and addressable intra-code gates
In Part I, we introduced a general framework for constructing logical gates in quantum CSS codes from cohomology invariants, focusing on cup products and their generalizations from topological to…Efficient Fidelity Estimation of General Quantum Resource States via Clifford Circuits
Fidelity estimation is a fundamental tool for assessing quantum resource states across quantum information science.Complete Classification of Reversible Entanglement Transformations of Two Qutrits
Suppose Alice and Bob can transform one shared mixed state into another by local operations and classical communication, and can also recover the first state from the second.Origin and classification of fractional dynamical topology in non-Hermitian quantum systems
Dynamical quantum phase transitions (DQPT) provide a fundamental framework for characterizing nonequilibrium critical phenomena, and have recently been extended to non-Hermitian systems.Quantum n-coloring is undecidable for every n $\ge$ 3
The quantum $n$-coloring problem, given graph $G$, asks whether there exists a perfect quantum strategy for the $n$-coloring game of $G$.