Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,215 papers in 12 months (+3% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Tailored First-order and Interior-point methods and a new semidefinite programming hierarchy for entanglement detection
Javier F. Peña, Vikesh Siddhu, Sridhar Tayur·Aug 7, 2025
Quantum entanglement lies at the heart of quantum information science, yet its reliable detection in high-dimensional or noisy systems remains a fundamental computational challenge. Semidefinite programming (SDP) hierarchies, such as the Doherty-Parr...
Quantum Circuit Benchmarking on IBM Brisbane: Performance Insights from Superconducting Qubit Models
J. Selvam, S. Veni·Aug 7, 2025
This paper investigates quantum communication using superconducting qubits, emphasizing the simulation and control of quantum systems via IBM Brisbane quantum processor. We focus on implementing fundamental quantum gates and analyzing the evolution o...
Model-based framework for automated quantification of error sources in quantum state tomography
Junpei Oba, Hsin-Pin Lo, Yasuhiro Yamada +6 more·Aug 7, 2025
High-quality quantum state generation is essential for advanced quantum information processing, including quantum communication, quantum sensing, and quantum computing. In practice, various error sources degrade the quality of quantum states, and qua...
Absolutely maximally entangled pure states of multipartite quantum systems
Grzegorz Rajchel-Mieldzioć, Rafał Bistroń, Albert Rico +2 more·Aug 6, 2025
Absolutely maximally entangled (AME) pure states of a system composed of $N$ parties are distinguished by the property that for any splitting at least one partial trace is maximally mixed. Due to maximal possible correlations between any two selected...
Quantum circuit complexity and unsupervised machine learning of topological order
Yanming Che, Clemens Gneiting, Xiaoguang Wang +1 more·Aug 6, 2025
Inspired by the close relationship between Kolmogorov complexity and unsupervised machine learning, we explore quantum circuit complexity, an important concept in quantum computation and quantum information science, as a pivot to understand and to bu...
Thermalization with partial information
P. Faist, Sumeet Khatri·Aug 6, 2025
A many-body system, whether in contact with a large environment or evolving under complex dynamics, can typically be modeled as occupying the thermal state singled out by Jaynes'maximum entropy principle. Here, we find analogous fundamental principle...
Maximum channel entropy principle and microcanonical channels
P. Faist, Sumeet Khatri·Aug 6, 2025
The thermal state plays a number of significant roles throughout physics, information theory, quantum computing, and machine learning. It arises from Jaynes'maximum-entropy principle as the maximally entropic state subject to linear constraints, and ...
Maximally non-projective measurements are not always symmetric informationally complete
Gabriele Cobucci, Raphael Brinster, Shishir Khandelwal +4 more·Aug 5, 2025
Standard quantum measurements are projective. However, the full scope of quantum measurements is represented by positive operator-valued measures (POVMs) and many of these break the limitations of projective measurements as resources in quantum infor...
Entanglement Detection Beyond Local Bound with Coarse Calibrated measurements
Liang-Liang Sun, Yong-Shun Song, Sixia Yu·Aug 5, 2025
Bell's test, initially devised to distinguish quantum theory from local hidden variable models through {violations of local bounds}, is also a common tool for detecting entanglement. For this purpose, one can assume the quantum description of devices...
Existing experiments suffice to indirectly verify the quantum essence of gravity
Martin Plávala·Aug 5, 2025
The gravity-mediated entanglement experiments employ concepts from quantum information to argue that if entanglement due to gravitational interaction is observed, then gravity cannot be described by a classical system. However, the proposed experimen...
Causal Interventions Beyond Time: A CP-do(C)-Calculus for Indefinite Quantum Order
Jordi Vallverdú·Aug 5, 2025
We reformulate Pearl's three rules of do-calculus in the language of completely positive (CP) trace-preserving maps, thereby extending them to quantum systems with entanglement. We prove that Rule~2 fails whenever the underlying process admits indefi...
Moveless: Minimizing QEC Qverhead on QCCDS via Versatile Execution and Low Excess Shuttling
Sahil Khan, Suhas Vittal, Kenneth R. Brown +1 more·Aug 5, 2025
One of the most promising paths towards large scale fault tolerant quantum computation is the use of quantum error correcting codes. The majority of popular codes are stabilizer codes, in which error information is extracted via the repeated executio...
Do GNN-based QEC Decoders Require Classical Knowledge? Evaluating the Efficacy of Knowledge Distillation from MWPM
Ryota Ikeda·Aug 5, 2025
The performance of decoders in Quantum Error Correction (QEC) is key to realizing practical quantum computers. In recent years, Graph Neural Networks (GNNs) have emerged as a promising approach, but their training methodologies are not yet well-estab...
Strong electron-electron interactions in a dilute weakly-localized metal near a metal-to-insulator transition
Nicolò D'Anna, Jamie Bragg, Aidan G. McConnell +12 more·Aug 4, 2025
Because it is easily switched from insulator to metal either via chemical doping or electrical gating, silicon is at the core of modern information technology and remains a candidate platform for quantum computing. The metal-to-insulator transition i...
Distributed fault-tolerant quantum memories over a 2xL array of qubit modules
Edwin Tham, Min Ye, Ilia Khait +2 more·Aug 3, 2025
We propose an architecture for a quantum memory distributed over a $2 \times L$ array of modules equipped with a cyclic shift implemented via flying qubits. The logical information is distributed across the first row of $L$ modules and quantum error ...
Entangling Power and Its Deviation: A Quantitative Analysis on Input-State Dependence and Variability in Entanglement Generation
Kyoungho Cho, Jeongho Bang·Aug 1, 2025
Quantifying the entangling capability of quantum operations is a fundamental task in quantum information science. Traditionally, this capability is measured by the entangling power (EP), defined as the average entanglement generated when a quantum op...
Magic States in the Asymmetric Quantum Rabi Model
A. Campos-Uscanga, E. Rodr'iguez, E. Mart'inez +1 more·Aug 1, 2025
Magic or non-stabilizerness is a resource for quantum computing that has been extensively studied in qudit networks. It describes the degree to which Clifford gates cannot generate a given state, capturing the advantage of quantum over classical comp...
Nonclassical microwave radiation from the parametric dynamical Casimir effect in the reversed-dissipation regime of circuit optomechanics
H. Solki, A. Motazedifard, M. Naderi +2 more·Aug 1, 2025
We propose an experimentally feasible optomechanical system (OMS) that is dispersively driven and operates in the reversed dissipation regime (RDR), where the mechanical damping rate far exceeds the cavity decay rate. We demonstrate that coherent, fa...
Transfer Entropy and O-Information to Detect Grokking in Tensor Network Multi-Class Classification Problems
Domenico Pomarico, Roberto Cilli, A. Monaco +10 more·Jul 31, 2025
Quantum-enhanced machine learning, encompassing both quantum algorithms and quantum-inspired classical methods such as tensor networks, offers promising tools for extracting structure from complex, high-dimensional data. In this work, we study the tr...
Entanglement spreading and emergent locality in Brownian SYK chains
Onkar Parrikar, Jatin A. Narde, Harshit Rajgadia +1 more·Jul 31, 2025
The Ryu-Takayanagi (RT) formula and its interpretation in terms of quantum error correction (QEC) implies an emergent locality for the spread of quantum information in holographic CFTs, where information injected at a point in the boundary theory spr...