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On-Chip Verified Quantum Computation with an Ion-Trap Quantum Processing Unit.

Cica Gustiani1, Dominik Leichtle2, Jonathan Miller2

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|October 31, 2025
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This summary is machine-generated.

We developed a new on-chip method for secure quantum computing verification, making it more practical. This approach eliminates the need for a quantum-capable client, enabling larger verified quantum computations.

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Area of Science:

  • Quantum Information Science
  • Quantum Computing Security
  • Experimental Quantum Physics

Background:

  • Cryptographically secure verification of quantum computers is crucial for trust.
  • Existing protocols often require quantum communication, limiting practicality.
  • On-chip implementation offers a more accessible verification solution.

Purpose of the Study:

  • To present a novel, on-chip approach for cryptographically secure verification and benchmarking of quantum computing.
  • To enhance the practicality of quantum computing verification by removing the need for a quantum-capable client.
  • To demonstrate the largest verified measurement-based quantum computations to date.

Main Methods:

  • Developed an entirely on-chip protocol for quantum computing verification.
  • Utilized quantum state tomography to justify noise independence assumptions.
  • Quantified soundness error due to residual secret dependencies.
  • Implemented the protocol on a 20-qubit ion-trap quantum processor (Quantinuum H1-1).

Main Results:

  • Successfully demonstrated a novel, on-chip cryptographically secure verification protocol.
  • Verified measurement-based quantum computations using measurement patterns with up to 52 vertices.
  • Achieved the largest verified measurement-based quantum computations reported to date.
  • Showcased the enhanced practicality of the on-chip approach.

Conclusions:

  • The novel on-chip protocol significantly enhances the practicality of quantum computing verification.
  • The method enables larger-scale verified quantum computations without requiring a quantum-capable client.
  • This work represents a significant step towards secure and practical quantum computing.