Mitigating Dynamic Crosstalk with Optimal Control

• URL: http://arxiv.org/abs/2603.24205v1
• Date: Wed, 25 Mar 2026 11:29:45 GMT
• Title: Mitigating Dynamic Crosstalk with Optimal Control
• Abstract summary: We minimize dynamic crosstalk using quantum optimal control based on the perfect entangler spectrum.<n>Only minimal pulse modifications are required to mitigate the form of crosstalk that is otherwise most difficult to predict.
• Score: 0.10923877073891443
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The prevalence of quantum crosstalk is an important barrier to scaling frequency-addressable qubit architectures, with dynamic crosstalk being particularly difficult to detect and suppress. This form of crosstalk refers to unintended interactions driven by the gate control fields themselves. Here, we minimize dynamic crosstalk using quantum optimal control based on the perfect entangler spectrum, where spectral peaks signal unwanted entanglement with spectator qubits. Focusing on parametric gates in tunable coupler systems, we derive pulse shapes that eliminate dynamic crosstalk. Remarkably, only minimal pulse modifications are required to mitigate the form of crosstalk that is otherwise most difficult to predict. The ability to suppress dynamic crosstalk via the perfect entangler spectrum establishes a generalizable control principle for eliminating unwanted interactions in quantum hardware.

Related papers

• Mitigating crosstalk errors for simultaneous single-qubit gates on a superconducting quantum processor [59.06950309601253]
  Single-qubit gates on superconducting quantum processors are typically implemented using microwave pulses applied through dedicated control lines.<n>These microwave pulses may also drive other qubits due to crosstalk arising from capacitive coupling and wavefunction overlap.<n>Crosstalk and frequency crowding increase errors during simultaneous single-qubit operations relative to isolated gates.
  arXiv  Detail & Related papers  (2026-03-11T17:47:32Z)
• Flux-Activated Resonant Control of a Bosonic Quantum Memory [63.35373457838474]
  Bosonic circuit quantum electrodynamics (cQED) coherently control long-lived superconducting cavities.<n>We integrate an on-chip flux-control architecture with a long-lived bosonic memory housed in a 3D superconducting cavity.<n>We realize efficient arbitrary rotations between any pair of Fock levels in the memory.
  arXiv  Detail & Related papers  (2026-02-20T10:22:53Z)
• Rethinking Multi-Condition DiTs: Eliminating Redundant Attention via Position-Alignment and Keyword-Scoping [61.459927600301654]
  Multi-condition control is bottlenecked by the conventional concatenate-and-attend'' strategy.<n>Our analysis reveals that much of this cross-modal interaction is spatially or semantically redundant.<n>We propose Position-aligned and Keyword-scoped Attention (PKA), a highly efficient framework designed to eliminate these redundancies.
  arXiv  Detail & Related papers  (2026-02-06T16:39:10Z)
• Scalable Suppression of XY Crosstalk by Pulse-Level Control in Superconducting Quantum Processors [0.0]
  High-performance quantum control is increasingly critical in superconducting quantum processors.<n>In particular, unwanted interactions between nearby qubits give rise to crosstalk errors that limit operational performance.<n>Here, we propose a scalable pulse-level control framework to suppress XY crosstalk errors.
  arXiv  Detail & Related papers  (2026-01-08T18:56:03Z)
• The perfect entangler spectrum as a tool to analyze crosstalk [0.0]
  Crosstalk is a key obstacle to scaling up quantum computers.<n>We introduce the perfect entangler spectrum as a means to identify dynamic crosstalk leading to undesired entanglement.
  arXiv  Detail & Related papers  (2025-06-03T17:58:50Z)
• Communication-Control Codesign for Large-Scale Wireless Networked Control Systems [80.30532872347668]
  Wireless Networked Control Systems (WNCSs) are essential to Industry 4.0, enabling flexible control in applications, such as drone swarms and autonomous robots. We propose a practical WNCS model that captures correlated dynamics among multiple control loops with spatially distributed sensors and actuators sharing limited wireless resources over multi-state Markov block-fading channels. We develop a Deep Reinforcement Learning (DRL) algorithm that efficiently handles the hybrid action space, captures communication-control correlations, and ensures robust training despite sparse cross-domain variables and floating control inputs.
  arXiv  Detail & Related papers  (2024-10-15T06:28:21Z)
• CAMEL: Physically Inspired Crosstalk-Aware Mapping and gatE scheduLing for Frequency-Tunable Quantum Chips [5.882878136245986]
  Crosstalk represents a formidable obstacle in quantum computing. We introduce a Crosstalk-Aware Mapping and gatE Scheduling (CAMEL) approach to mitigate crosstalk. In contrast to approaches serializing crosstalk gates, CAMEL successfully suppresses decoherence.
  arXiv  Detail & Related papers  (2023-11-30T00:31:03Z)
• Fast ZZ-Free Entangling Gates for Superconducting Qubits Assisted by a Driven Resonator [42.152052307404]
  We propose a simple scheme to cancel stray interactions between qubits. We numerically show that such a scheme can enable short and high-fidelity entangling gates. Our architecture is not only ZZ free but also contains no extra noisy components.
  arXiv  Detail & Related papers  (2023-11-02T15:42:02Z)
• Individual-atom control in array through phase modulation [9.783030573753894]
  We introduce a method to engineer single qubit gates through phase-modulated continuous driving. Distinct qubits can be individually addressed to high accuracy by simply tuning the modulation parameters. Our results pave the way to scaling up atom-array platforms with low-error parallel-gate operations.
  arXiv  Detail & Related papers  (2023-10-30T17:04:53Z)
• Mitigating crosstalk errors by randomized compiling: Simulation of the BCS model on a superconducting quantum computer [41.94295877935867]
  Crosstalk errors, stemming from CNOT two-qubit gates, are a crucial source of errors on numerous quantum computing platforms. We develop and apply an extension of the randomized compiling protocol that includes a special treatment of neighboring qubits. Our twirling of neighboring qubits is shown to dramatically improve the noise estimation protocol without the need to add new qubits or circuits.
  arXiv  Detail & Related papers  (2023-05-03T18:00:02Z)
• Multi-squeezed state generation and universal bosonic control via a driven quantum Rabi model [68.8204255655161]
  Universal control over a bosonic degree of freedom is key in the quest for quantum-based technologies. Here we consider a single ancillary two-level system, interacting with the bosonic mode of interest via a driven quantum Rabi model. We show that it is sufficient to induce the deterministic realization of a large class of Gaussian and non-Gaussian gates, which in turn provide universal bosonic control.
  arXiv  Detail & Related papers  (2022-09-16T14:18:53Z)
• Crosstalk Suppression in Individually Addressed Two-Qubit Gates in a Trapped-Ion Quantum Computer [3.6908685287687812]
  Crosstalk between target and neighboring spectator qubits due to spillover of control signals is a major error source in quantum computers. We show that in our laser-driven trapped-ion system coherent crosstalk error can be modelled as residual $Xhatsigma_phi$ interaction. We propose and demonstrate a crosstalk suppression scheme that eliminates all first-order crosstalk, yet only requires local control by driving rotations solely on the target qubits.
  arXiv  Detail & Related papers  (2022-06-06T16:00:34Z)

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.