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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Explicitly correlated ground states with a feedback-free variational hybrid algorithm
Explicitly correlated methods, which represent dominant short-range correlations by a diagonal Jastrow-type correlator, are designed to accurately describe systems of strongly correlated electrons…PULSUS: Direct Frequency-Domain Multidimensional Spectroscopy Beyond the Impulsive Rotating-Wave Approximation
We introduce PULSUS, a direct frequency-domain framework for multidimensional spectroscopy of open quantum systems beyond the impulsive rotating-wave approximation.Finite-energy two-way assisted capacities: Exact formulas for multimode loss and fading
We study quantum communication, entanglement distribution, and secret-key generation through multimode bosonic loss and fading channels, assisted by local quantum operations and two-way classical…Quantum-enhanced mechanical sensing with machine-learning estimation
Massive mechanical oscillators couple directly to forces, accelerations and gravity, making them attractive probes of new physics and of quantum mechanics at macroscopic scales.Deterministic and programmable generation of mechanical multipartite entangled states
Multimode mechanical resonators offer a large set of densely packed, long-lived bosonic modes within a single compact device, making them attractive for quantum simulation, quantum information…Relative-Entropy Geometry and Convergence in Nonconvex Wiretap Optimization
We develop and analyze an entropic descent method for a nonconvex optimization problem on probability simplices arising in classical and quantum secure communication.$\mathsf{EFI}\Leftrightarrow\mathsf{1PRS}$
A series of recent works has established EFI pairs as the "minimal" assumption for quantum cryptography.On the coincidence of discrete and continuous definitions of Entanglement of Formation
It is proved that every Borel ensemble of pure states on a separable bipartite Hilbert space with finite average entanglement admits a countable ensemble with the same barycenter and arbitrarily…Gaussian entanglement and quantum communication: geodesic optimization and multimode bounds
Loss and noise limit the use of light to distribute entanglement, transmit quantum information, and establish secret keys.Invertible subalgebras for chiral semion topological order
Chiral topological order is incompatible with strictly two-dimensional local commuting-projector Hamiltonians on finite-dimensional tensor-product Hilbert spaces.Optimal Disorder Strength for Approximate Unitary $k$-Designs in Spin Chains
Quantum simulators with disordered spin Hamiltonians offer a natural route to Haar-like unitary ensembles, but face a competition.Stabilizer Rényi Entropy Without a Phase Reference
Stabilizer Rényi entropy quantifies magic relative to a complete Pauli frame.Measurement-induced criticality for non-Abelian anyons: The monitored golden chain
Non-Abelian anyon chains whose interactions favor a single fusion channel host quantum critical ground states described by minimal-model conformal field theories (CFTs) protected by a topological…Programmable Polaron Models and Tomography in Trapped-Ion Quantum Simulators
Strong coupling between mobile charge carriers or excitons and lattice vibrations gives rise to polarons: quasiparticles formed by charge carriers dressed by a cloud of phonon excitations.Instability of Markov chains under infinitesimal coherent dissipation
Under local Lindbladian evolution, the growth of conditional mutual information and its associated Markov length scale is not limited by Lieb-Robinson bounds, yet it has been unclear how quickly the…Logical gate set tomography
Quantum error correction (QEC) can strongly suppress noise, but predicting whether a computation succeeds requires understanding not only how much effective noise persists after QEC, but what form…The Generalized BEADS Representation: An Informationally Complete Visualization of Mixed Quantum States
A deep understanding of quantum information theory is essential for quantum science and technology.The cost of classically simulating quantum communication is as high as it could be
A long-standing open question is to characterize the classical communication cost of simulating the correlations arising from measurements on finite-dimensional quantum systems.A modular quantum computer based on Cornucopia codes
Ultra-high-rate quantum error correction codes store many logical qubits in a single code block with few physical qubits.Federated Unlearning of Quantum Data via Classical Shadows
Quantum federated learning trains a quantum neural network (QNN) across nodes that hold quantum data, such as the states of quantum sensors.