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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Entangled Measurement Outcomes for Optimal Postselection in Quantum Batteries
Postselection can enhance the performance of a selected quantum battery branch, raising the question of whether the optimum can always be achieved by product measurements on the auxiliary subsystems.Induced Lorentzian geometry from the fermionic quantum metric
Quantum geometry is conventionally understood in parameter or momentum space and need not be related to a geometry in configuration space.Probing Operator Spreading with Local Quantum Fluctuations
Measuring out-of-time-ordered correlators (OTOCs) is experimentally challenging, often requiring effective reversal of many-body dynamics.Encoded reversible addition in constant Toffoli depth
We show that reversible in-place quantum addition modulo $2^n-1$ can be implemented in constant Toffoli depth using $O(n)$ space, provided that the variables are encoded in a certain non-standard…Quantum query complexity of Hurwitz stability testing
Determining whether every trajectory of the linear system $\dot{x}=Ax$ converges to zero (or, equivalently, whether $A$ is Hurwitz stable) is a fundamental problem in control theory.Anomalous superradiant phases in a quantum Rabi zigzag chain under a synthetic gauge field
We present the phase diagram of a one-dimensional quantum Rabi zigzag chain under an artificial gauge field, which is implemented via phase-modulated next-nearest-neighbor (NNN) hopping.Biorthogonal universal quantum control
As a paradigm for describing open-quantum-system dynamics, the non-Hermitian Schrödinger equation generally modifies state norms, complicating coherent control over the system's Hilbert space.Quantum Advantage in Beam-Displacement Estimation for Inter-Satellite Quantum-Secure Time Transfer
In this work, we investigate the practical feasibility of achieving a quantum advantage, in the context of inter-satellite quantum communication, of satellite position estimation.Longitudinal electric corner modes in continuum quantum gauge theory with matter
Subregions in gauge theories give rise to edge modes and corner charges supported on their boundaries.Testing hardware quantum machine learning claims with a null circuit: fill prediction on Binance futures with 129 qubits of an IBM Heron processor
Quantum processors are now used as feature generators for classical models on tabular data.Parametric Enhancement of an Optical Spring in a Dark Signal-Recycling Cavity
Optical springs tailor the response of precision sensors.Estimation of Quantum Umlaut Information
Quantifying correlations is important for understanding how quantum states and channels support information processing.Optimality of the Petz-Fuchs Smoothed State
Quantum state smoothing is an estimation technique that uses past and future measurement information obtained from a continuous-in-time measurement record to reconstruct the state of an open quantum…PyQLAS: A Quantum-Classical Hybrid Solver Library for Linear Systems
Quantum algorithms solve a linear system at a cost that grows only polylogarithmically in its dimension, but on present-day hardware that advantage is realised only if the quantum and the classical…Time-Domain Multiplexing for Resource-Efficient Heralded GKP State Preparation
Gottesman-Kitaev-Preskill (GKP) states are key resources for fault-tolerant photonic quantum computing, but their conditional preparation via Gaussian boson sampling involves a trade-off between…Loss-aware optimization of realistic GKP gid states
Realistic preparation of Gottesman-Kitaev-Preskill (GKP) states, the prime candidates for quantum computation with bosonic systems, is inevitably burdened by photon loss.Distilling Knowledge from Search: Decoder Model Factory for Quantum LDPC Codes
We introduce GraphMP, a learning-based message-passing decoder for quantum low-density parity-check codes that transfers without fine-tuning across code families, code sizes, physical error rates…Helper-assisted quantum sensing with low dressed-state leakage
We study a two-qubit sensing protocol in which only a helper qubit is read out.Real-time BP decoding of a high-rate QEC code
We present a real-time FPGA decoder for a high-rate $[[512,174,8]]$ 3D product qLDPC code.Analytic level statistics of the quantum Rabi model
We derive an analytic expression for the distribution of level spacings in the quantum Rabi model.