Toward Secure Multitenant Quantum Computing: Circuit Affinity, Crosstalk Patterns, and Grouping Strategies

• URL: http://arxiv.org/abs/2605.00118v1
• Date: Thu, 30 Apr 2026 18:18:41 GMT
• Title: Toward Secure Multitenant Quantum Computing: Circuit Affinity, Crosstalk Patterns, and Grouping Strategies
• Abstract summary: Multitenancy increases throughput and reduces costs in cloud-based quantum computing.<n> concurrent job execution introduces security risks through inter-circuit crosstalk.<n>We characterize the structural predictability of these interference patterns across seven IBM superconducting processors.
• Score: 0.5013248430919223
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Multitenancy increases throughput and reduces costs in cloud-based quantum computing, but concurrent job execution introduces security risks through inter-circuit crosstalk. We characterize the structural predictability of these interference patterns across seven IBM superconducting processors, spanning Heron (r1-r3) and Nighthawk (r1) architectures and five different circuit types. We evaluate pairwise interactions, by applying the Structural Similarity Index (SSIM) and a structural $t$-statistic to the concurrent execution of five foundational quantum circuits (QAOA, Grover's, QPE, QFT, and ZZFeatureMap), we quantify behavioral consistency across disparate hardware. Our results identify three types of circuits: universally aggressive, universally sensitive, and cotenant-dependent circuits. Aggressive circuits, such as Grover's Algorithm, exhibit a statistically significant interference pattern, yielding a $t$-statistic range of $[1.37,2.61]$ relative to the standalone baselines across all tested pairings. Conversely, sensitive circuits, such as the Quantum Fourier Transform, demonstrate a disproportionate susceptibility to multitenant execution, showing high deviations from single-tenant computational behavior. We demonstrate that crosstalk signatures are highly consistent within architectural revisions--with intra-revision similarity reaching $0.77$ (Hr3) and $0.68$ (Hr2)--while inter-revision similarity drops to $0.43$. Furthermore, we identify a ``topological decoupling" between Heavy-Hex and square lattice systems, where structural similarity falls to $0.01$ between Heron r1 and Nighthawk r1. These findings provide an empirical foundation for hardware-aware schedulers to strategically pair jobs, maximizing system utilization while preserving computational integrity.

Related papers

• Phase-Sensitive Benchmarking of Composite Quantum Gates with Chiral-Interference Circuits on Quantum Hardware [0.0]
  We implement gate-native circuits that simulate the state-transfer interference underlying three- and four-level chiral-resolution protocols.<n>On an IBM quantum processor, the two circuits produce the expected enantiomer-dependent output states with probabilities of nearly $98%$.<n>We then use these circuits as physically motivated, phase-sensitive benchmarks for composite quantum gates.
  arXiv  Detail & Related papers  (2026-07-20T16:29:30Z)
• Quantum Circuit Vision: Cost-Aware Evaluation of Visual AI Agents for Quantum Code Generation [0.8652572023509929]
  We present Quantum Circuit Vision, a cost-aware evaluation framework for multimodal AI agents on quantum circuit visual understanding.<n>We construct a 132-circuit benchmark spanning 13 categories ($1$--$10$ qubits) with executable Amazon Braket code and unitary-fidelity verification.<n>We propose a cascade routing strategy that achieves 84% accuracy at 38% of single-model cost, demonstrating that model routing dominates prompt engineering as a cost lever.
  arXiv  Detail & Related papers  (2026-07-11T00:54:52Z)
• Fixed-Reservoir vs Variational Quantum Architectures for Chaotic Dynamics: Benchmarking QRC and QPINN on the Lorenz System [0.14323566945483496]
  We compare two quantum approaches for chaotic time-series prediction on the Lorenz system.<n>We formalize a temporal windowing technique within the QRC pipeline that improves attractor reconstruction.<n>Our findings suggest the fixed-reservoir architecture is a primary driver of QRC's advantage at these scales.
  arXiv  Detail & Related papers  (2026-04-26T14:43:03Z)
• A Scalable Distributed Quantum Optimization Framework via Factor Graph Paradigm [46.08923284345648]
  We introduce a structure-aware framework for distributed quantum optimization.<n>We find that for a search space of size $N$, our framework achieves $O(sqrtN)$ query complexity up to processors and separator dependent factors.<n>We show that structure-aware decomposition delivers a practical path to scalable distributed quantum optimization on quantum networks.
  arXiv  Detail & Related papers  (2026-03-08T15:15:52Z)
• Generalizing GNNs with Tokenized Mixture of Experts [75.8310720413187]
  We show that improving stability requires reducing reliance on shift-sensitive features, leaving an irreducible worst-case generalization floor.<n>We propose STEM-GNN, a pretrain-then-finetune framework with a mixture-of-experts encoder for diverse computation paths.<n>Across nine node, link, and graph benchmarks, STEM-GNN achieves a stronger three-way balance, improving robustness to degree/homophily shifts and to feature/edge corruptions while remaining competitive on clean graphs.
  arXiv  Detail & Related papers  (2026-02-09T22:48:30Z)
• Parity Cross-Resonance: A Multiqubit Gate [5.6995215414894735]
  We present a native three-qubit entangling gate that exploits engineered interactions to realize control-control-target and control-target-target operations.<n>We show it can be utilized in several ways, for example, in GHZ triplet state preparation.
  arXiv  Detail & Related papers  (2025-08-14T16:26:32Z)
• Microwave-activated high-fidelity three-qubit gate scheme for fixed-frequency superconducting qubits [19.88291799199791]
  We propose a microwave-activated three-qubit gate protocol for fixed-frequency transmon qubits in the large-detuning regime.<n>The protocol maintains process fidelities exceeding $98%$ under decoherence.<n>This strategy advances scalable quantum computing systems by improving coherence properties, reducing spectral congestion, and expanding the experimental toolkit for error-resilient quantum operations.
  arXiv  Detail & Related papers  (2025-04-30T06:16:16Z)
• Performance Characterization of a Multi-Module Quantum Processor with Static Inter-Chip Couplers [63.42120407991982]
  Three-dimensional integration technologies such as flip-chip bonding are a key prerequisite to realize large-scale superconducting quantum processors.<n>We present a design for a multi-chip module comprising one carrier chip and four qubit modules.<n>Measuring two of the qubits, we analyze the readout performance, finding a mean three-level state-assignment error of $9 times 10-3$ in 200 ns.<n>We demonstrate a controlled-Z two-qubit gate in 100 ns with an error of $7 times 10-3$ extracted from interleaved randomized benchmarking.
  arXiv  Detail & Related papers  (2025-03-16T18:32:44Z)
• Predicting the Stability of Hierarchical Triple Systems with Convolutional Neural Networks [68.8204255655161]
  We propose a convolutional neural network model to predict the stability of hierarchical triples. All trained models are made publicly available, allowing to predict the stability of hierarchical triple systems $200$ times faster than pure $N$-body methods.
  arXiv  Detail & Related papers  (2022-06-24T17:58:13Z)
• Scalable Lipschitz Residual Networks with Convex Potential Flows [120.27516256281359]
  We show that using convex potentials in a residual network gradient flow provides a built-in $1$-Lipschitz transformation. A comprehensive set of experiments on CIFAR-10 demonstrates the scalability of our architecture and the benefit of our approach for $ell$ provable defenses.
  arXiv  Detail & Related papers  (2021-10-25T07:12:53Z)
• Realization of arbitrary doubly-controlled quantum phase gates [62.997667081978825]
  We introduce a high-fidelity gate set inspired by a proposal for near-term quantum advantage in optimization problems. By orchestrating coherent, multi-level control over three transmon qutrits, we synthesize a family of deterministic, continuous-angle quantum phase gates acting in the natural three-qubit computational basis.
  arXiv  Detail & Related papers  (2021-08-03T17:49:09Z)
• Realization of high-fidelity CZ and ZZ-free iSWAP gates with a tunable coupler [40.456646238780195]
  Two-qubit gates at scale are a key requirement to realize the full promise of quantum computation and simulation. We present a systematic approach that goes beyond the dispersive approximation to exploit the engineered level structure of the coupler and optimize its control. We experimentally demonstrate CZ and $ZZ$-free iSWAP gates with two-qubit interaction fidelities of $99.76 pm 0.07$% and $99.87 pm 0.23$%, respectively.
  arXiv  Detail & Related papers  (2020-11-02T19:09:43Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.