Note on simple and consistent gateset characterization including calibration and decoherence errors

• URL: http://arxiv.org/abs/2402.17727v1
• Date: Tue, 27 Feb 2024 18:01:18 GMT
• Title: Note on simple and consistent gateset characterization including calibration and decoherence errors
• Authors: Jeffrey M. Epstein
• Abstract summary: Building high-fidelity quantum computers requires efficient methods for the characterization of gate errors. We provide a method for determining the parameters corresponding to decoherence in a model gateset.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Building high-fidelity quantum computers requires efficient methods for the characterization of gate errors that provide actionable information that may be fed back into engineering efforts. Extraction of realistic error models is also critical to accurate simulation and design of quantum circuits, including those used in quantum error correction. We provide a method for determining the parameters corresponding to decoherence in a model gateset. We demonstrate that this method is robust to SPAM and pulse area errors, and describe a simple and intuitive method for interpreting the quality and precision of the resulting error model.

Related papers

• Single-shot and measurement-based quantum error correction via fault complexes [0.0]
  Photonics provides a viable path to a scalable fault-tolerant quantum computer. Foliation is the construction of fault-tolerant graph states. We introduce the fault complex, a representation of dynamic quantum error correction protocols.
  arXiv  Detail & Related papers  (2024-10-16T18:52:24Z)
• Bounding the systematic error in quantum error mitigation due to model violation [0.0]
  We develop a methodology to efficiently compute upper bounds on the impact of error-model inaccuracy in error mitigation. Our protocols require no additional experiments, and instead rely on comparisons between the error model and the error-learning data. We show that our estimated upper bounds are typically close to the worst observed performance of error mitigation on random circuits.
  arXiv  Detail & Related papers  (2024-08-20T16:27:00Z)
• Designing fault-tolerant circuits using detector error models [0.29998889086656577]
  We explore the powerful formalism of detector error models, which fully captures fault-tolerance at the circuit level. We apply the formalism to three different levels of abstraction in the engineering cycle of fault-tolerant circuit designs.
  arXiv  Detail & Related papers  (2024-07-18T18:00:05Z)
• Measuring NISQ Gate-Based Qubit Stability Using a 1+1 Field Theory and Cycle Benchmarking [50.8020641352841]
  We study coherent errors on a quantum hardware platform using a transverse field Ising model Hamiltonian as a sample user application. We identify inter-day and intra-day qubit calibration drift and the impacts of quantum circuit placement on groups of qubits in different physical locations on the processor. This paper also discusses how these measurements can provide a better understanding of these types of errors and how they may improve efforts to validate the accuracy of quantum computations.
  arXiv  Detail & Related papers  (2022-01-08T23:12:55Z)
• Analytical and experimental study of center line miscalibrations in M\o lmer-S\o rensen gates [51.93099889384597]
  We study a systematic perturbative expansion in miscalibrated parameters of the Molmer-Sorensen entangling gate. We compute the gate evolution operator which allows us to obtain relevant key properties. We verify the predictions from our model by benchmarking them against measurements in a trapped-ion quantum processor.
  arXiv  Detail & Related papers  (2021-12-10T10:56:16Z)
• Efficient diagnostics for quantum error correction [0.0]
  We present a scalable experimental approach based on Pauli error reconstruction to predict the performance of codes. Numerical evidence demonstrates that our method significantly outperforms predictions based on standard error metrics for various error models.
  arXiv  Detail & Related papers  (2021-08-24T16:28:29Z)
• Performance of teleportation-based error correction circuits for bosonic codes with noisy measurements [58.720142291102135]
  We analyze the error-correction capabilities of rotation-symmetric codes using a teleportation-based error-correction circuit. We find that with the currently achievable measurement efficiencies in microwave optics, bosonic rotation codes undergo a substantial decrease in their break-even potential.
  arXiv  Detail & Related papers  (2021-08-02T16:12:13Z)
• Fault-tolerant parity readout on a shuttling-based trapped-ion quantum computer [64.47265213752996]
  We experimentally demonstrate a fault-tolerant weight-4 parity check measurement scheme. We achieve a flag-conditioned parity measurement single-shot fidelity of 93.2(2)%. The scheme is an essential building block in a broad class of stabilizer quantum error correction protocols.
  arXiv  Detail & Related papers  (2021-07-13T20:08:04Z)
• Quantum-tailored machine-learning characterization of a superconducting qubit [50.591267188664666]
  We develop an approach to characterize the dynamics of a quantum device and learn device parameters. This approach outperforms physics-agnostic recurrent neural networks trained on numerically generated and experimental data. This demonstration shows how leveraging domain knowledge improves the accuracy and efficiency of this characterization task.
  arXiv  Detail & Related papers  (2021-06-24T15:58:57Z)
• Crosstalk Suppression for Fault-tolerant Quantum Error Correction with Trapped Ions [62.997667081978825]
  We present a study of crosstalk errors in a quantum-computing architecture based on a single string of ions confined by a radio-frequency trap, and manipulated by individually-addressed laser beams. This type of errors affects spectator qubits that, ideally, should remain unaltered during the application of single- and two-qubit quantum gates addressed at a different set of active qubits. We microscopically model crosstalk errors from first principles and present a detailed study showing the importance of using a coherent vs incoherent error modelling and, moreover, discuss strategies to actively suppress this crosstalk at the gate level.
  arXiv  Detail & Related papers  (2020-12-21T14:20:40Z)
• A Bayesian Approach for Characterizing and Mitigating Gate and Measurement Errors [9.59731214999568]
  We use a Bayesian inference approach to identify parameters such as gate and readout error rates. By characterizing the device errors in this way, we can further improve the accuracy of quantum error mitigation.
  arXiv  Detail & Related papers  (2020-10-19T03:27:28Z)

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.