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 126
Vacuum entanglement in a time-dependent electric field
We analyze the correlations of the vacuum state of a charged scalar field by constructing localized observables in two disjoint regions.Transport theory for a generic two-arm co-propagating Majorana interferometer with Majorana fermion and edge vortex tunneling
Co-propagating chiral Majorana edge modes are predicted to exist in proximity-coupled quantum anomalous Hall systems.Optimal initial states for quantum Fisher information in linearized cavity optomechanics
We find the optimal initial states of a linearized cavity-optomechanical system for estimating the single-photon coupling by quantum Fisher information.Robust and leakage-resilient device-independent oblivious transfer in MiniQCrypt
Assuming post-quantum one-way functions, we construct device-independent (DI) oblivious transfer (OT) and bit commitment: honest parties use only trusted classical computation to operate untrusted…Unflattening by Flattening -- How Input Distributions Shape Output Variance in Angle-Encoded Circuits
Barren plateaus hinder training of parameterized quantum circuits by making loss gradients exponentially small in the number of qubits.Unbounded separation between definite and indefinite causal order in finite-dimensional quantum metrology
Indefinite causal order is known to offer enhancements in quantum metrology, notably including an unbounded advantage in the measurement of a geometric phase of a harmonic oscillator.Zero- Versus Infinite-Temperature Damping in Variational Quantum Circuits: Feature Scale, Sampling Cost, and Frame Gauge
The Pauli twirl of amplitude damping (AD) is generalized amplitude damping at infinite temperature: it keeps the contraction of AD and removes its non-unital term, so comparing the two in…Continuous-Process Randomized Compilation for Quantum Process Tensors
Traditional discrete randomized compiling (RC) tailors errors with random control frames at logical-gate boundaries, but fails to capture intra-instrument control evolution or persistent…Inherent Turbulence Immunity of Vector Vortex Beams in Free Space Quantum Key Distribution
Orbital angular momentum (OAM) multiplexing provides an infinite-dimensional discrete Hilbert space ideally suited for high-capacity free-space quantum key distribution (QKD).Efficient learning of quantum interactions from thermal metastable states
Learning quantum interactions from finite-temperature many-body systems is a central task in emerging quantum platforms.Molecular Dynamics with Nuclear Effects on Quantum Computers
Nuclear quantum effects are critical for describing proton transfer and hydrogen bonding, but their incorporation into quantum chemistry calculations is often computationally prohibitive on…Efficient certification of time-reversal symmetry requires entanglement
Time-reversal symmetry is a fundamental principle of physics describing the invariance of physical laws under reversal of the direction of time.On-shell renormalization of sine-Gordon by the quantum inverse scattering method
In the quantum inverse scattering method, the sine-Gordon model is solved on a lattice, and its continuum and infinite-volume limits become uniform only after the length of the box is rescaled.Adversarial Robustness in Fake Quantum Simulators
This paper investigates the performance scalability and adversarial robustness of Quantum Machine Learning (QML) models deployed on noise-model-based fake simulators.Electromagnetic Side-Channel Vulnerability in QKD Equipment
Actual quantum key distribution network nodes may be vulnerable to side-channel attacks such as electromagnetic leakage.Dissipation-Enabled Operator-Norm Locality Bounds for Bose-Hubbard Hamiltonians
Closed bosonic lattice systems do not generally admit operator norm Lieb--Robinson bounds uniformly in the initial state.A Code-Agnostic Graph Neural Network Decoder from the Detection Error Model
We present POLYMECHANON, a graph neural network (GNN) decoder for quantum error correction whose only input is the detection error model (DEM) of a quantum code under a given noise model.Mentor-Initiated Asymmetric Bidirectional Quantum Teleportation Protocol for Arbitrary Qubit States
In this paper, a mentor-initiated bidirectional asymmetric quantum teleportation protocol is proposed.Predicting electric-field noise in ion traps using fluctuation electrodynamics
Electric-field noise in microfabricated surface ion traps contributes to gate errors in trapped-ion quantum computers, but this noise has been challenging to predict.Efficiently Optimizing the Quantum Value of Bell Inequalities using Batched Gradient Descent
Exploring the world of Bell inequalities requires numerical methods that scale effectively with the number of parties, inputs, and outputs.