Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Probabilistic Storage and Retrieval of Quantum Superchannels for "Retrospective'' Intervention
Wataru Yokojima, Jisho Miyazaki, Mio Murao·Jun 21, 2026
Storing an unknown quantum computation in a quantum state and retrieving it at a desired later time is a challenging task, hindered by the no-programming theorem of quantum computations. In the previous studies on the task of probabilistic storage-an...
Lattice-quantile estimation of π and convex-region integrals from coined two-dimensional quantum walks
Jen-Yu Chang, En-Jui Kuo, Chih-Yu Chen +1 more·Jun 21, 2026
Monte Carlo integration is fundamentally limited by the M^(-1/2) rate that the Cramer-Rao bound imposes on any sample-mean estimator of an expectation value, regardless of how the samples are drawn. Coined discrete-time quantum walks (DTQWs) are know...
No Reference-Free Generalization in Quantum Machine Learning
Jeongho Bang·Jun 21, 2026
Quantum machine learning is often motivated by the exponentially large state space of quantum systems, but this promise leaves a basic generalization problem unresolved: how can a learner assign different meanings to unseen quantum directions when th...
Making Quantum Networks Work: Routing, Calibration, and Programmable Quantum Repeaters
Vinay Kumar·Jun 21, 2026
The quantum internet enables distribution of quantum states across distant nodes, supporting secure communication, distributed computing, and quantum sensing. Unlike classical networks, it is constrained by the no cloning theorem, probabilistic entan...
SHACR: A Graph-Augmented Semi-Autonomous Framework for Multi-Class Conflict Resolution in Smart Home IoT Automation
Leena Marghalani, Walid Aljoby, Suayb S. Arslan·Jun 21, 2026
Smart home automation increasingly relies on user-defined rules across heterogeneous IoT devices. While these rules appear harmless in isolation, their concurrent execution creates hidden, cross-rule interactions via shared devices, environmental var...
The Physics Behind Symmetrization
R. E. Kastner·Jun 21, 2026
It is often asserted that quantum states for same-type particles must be symmetrized due to ``label redundancy,'' i.e. the assumption that the permutations of labels in direct-product states do not reflect any real physical distinction and thus their...
Probing Single-Particle Spatial Extent With Helical Neutron Wavefronts
D. Sarenac, O. Lailey, C. W. Clark +8 more·Jun 21, 2026
Distinguishing transverse coherence length from single-particle wavepacket extent is fundamentally challenging, as both manifest through spatial broadening of observed intensity profiles in conventional experiments. Here we introduce a method based o...
Collective Mpemba-Type Relaxation in Degenerate Bosonic Modes Coupled to a Common Thermal Reservoir
I. M. de Araújo, H. Sanchez, L. F. Alves da Silva +3 more·Jun 20, 2026
We investigate collective Mpemba-type relaxation in a degenerate family of bosonic modes coupled to a common thermal reservoir. Starting from a fully symmetric M-mode description and employing a representative mean-field reduction, we derive effectiv...
Geometry-Controlled Exceptional Points in Helicoidal Orbital-Angular-Momentum Photonics
Edilberto O. Silva·Jun 20, 2026
Exceptional points (EPs) are non-Hermitian spectral singularities where eigenvalues and eigenvectors coalesce. We propose a geometry-controlled route to EPs in orbital-angular-momentum (OAM) photonics. In an effective torsion-free helicoidal backgrou...
Probing the Weak-Driving Quantum Speed Limit via Drift-Aware Shooting Methods
Denis Janković, Saba Taherpour, Paul-Louis Etienney +2 more·Jun 20, 2026
A central goal of quantum optimal control is to achieve high-fidelity and low-energy control pulses. When quantum optimal control methods optimize every point of a pulse discretized over small time steps independently this can yield high fidelity con...
Machine Learning Optimal Quantum Error Correction Thresholds
Dominik Seip, Luis Colmenarez, Markus Schmitt +1 more·Jun 20, 2026
As quantum computers remain susceptible to noise, QEC is essential for preserving logical information during computations. However, the performance of QEC codes breaks down beyond certain noise thresholds, revealing fundamental limits on their abilit...
Fundamental Irreversibility from Discrete Time
M. W. AlMasri·Jun 20, 2026
In 1964, Yu. A. Gol'fand proposed an extension of quantum mechanics to discrete time, predicting intrinsic non-unitarity and entropy increase. While historically significant, this formalism predates the modern theory of open quantum systems. In this ...
StableShots: Online Shot Stopping for Quantum Circuit Execution
Giuseppe Bisicchia, Alessandro Bocci, Ernesto Pimentel +1 more·Jun 20, 2026
Quantum circuit execution estimates output distributions by repeated measurements, yet developers commonly choose a fixed shot budget before execution. This static choice is brittle: low budgets can under-sample the distribution, while high budgets w...
Emergence of Boolean Facts from Markovian Coarse-Graining in Relational Quantum Causal Processes
Yipeng Xu·Jun 20, 2026
We formulate an operator-algebraic mechanism by which exact Boolean records can arise from local completely positive quantum operations without being imposed as microscopic structure. The kinematic input is an algebraic process functional assigning p...
Spectral and thermodynamic properties of supersymmetric quantum systems with self-adjoint deformed momentum
J. A. Oke, F. A. Dossa·Jun 20, 2026
We establish a rigorous framework for quantum systems with geometric deformations by constructing a strictly self-adjoint deformed momentum operator through the generalized extended momentum operator (GEMO) formalism. Unlike previous approaches relyi...
Transient Information Partition in Coherent Exciton-Phonon-Photon Dynamics
Kunio Ishida·Jun 20, 2026
We study transient information partition in a coherent exciton-phonon-photon system using subsystem-resolved quantum mutual information (QMI). By employing a model with excitonic, phononic, and photonic degrees of freedom, we analyze the dynamics in ...
Energy Trading Potential Index for a Peer-to-Peer Smart Grid Community with Flexible Prosumer Role Switching
Zain Imran, Sana Humayun, Muhammad Shahzaib Saleem +1 more·Jun 20, 2026
In many electricity markets, declining feed-in tariffs have made grid export increasingly unattractive for residential solar prosumers, while retail electricity prices remain high. Peer-to-peer (P2P) energy trading offers a direct alternative, but it...
Optimizing Pump Conditions of Parametric Amplifiers for Fast Multiplexed Readout of Superconducting Qubits
Jeongwon Kim, Wei Dai, Omrie Ovdat +3 more·Jun 20, 2026
Low-noise parametric amplifiers are widely used as the first-stage amplifier in qubit readout chains. The performance of parametric amplifiers depends sensitively on the choice of the pump condition. We propose a strategy for determining the pump con...
Hardware-native quantum phase estimation with circuit QED
Changchun Zhong·Jun 20, 2026
Quantum phase estimation is a cornerstone algorithm for determining eigenvalues of unitary operators with Heisenberg-limited precision. Conventional implementations rely on digital controlled-unitary operations together with phase-extraction circuits...
Detector-Grade Germanium as a Low-Disorder Host for Indium-Acceptor Spin Qubits: A Five-Qubit Materials-to-Architecture Design Study
D. -M. Mei, K. -M. Dong, S. A. Panamaldeniya +4 more·Jun 20, 2026
Acceptor-bound hole spins in germanium (Ge) offer a promising but underexplored route to semiconductor quantum information processing. We present a theory-guided design study of a detector-grade Ge acceptor-spin platform based on intentionally incorp...