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Trapped Ion Quantum Computing Superconducting Qubits

Sampling-based Learning Control for Quantum Systems with Uncertainties

arXiv
Authors: Daoyi Dong, Mohamed A. Mabrok, Ian R. Petersen, Bo Qi, Chunlin Chen, Herschel Rabitz

Year

2015

Paper ID

27942

Status

Preprint

Abstract Read

~2 min

Abstract Words

193

Citations

N/A

Abstract

Robust control design for quantum systems has been recognized as a key task in the development of practical quantum technology. In this paper, we present a systematic numerical methodology of sampling-based learning control (SLC) for control design of quantum systems with uncertainties. The SLC method includes two steps of "training" and "testing". In the training step, an augmented system is constructed using artificial samples generated by sampling uncertainty parameters according to a given distribution. A gradient flow based learning algorithm is developed to find the control for the augmented system. In the process of testing, a number of additional samples are tested to evaluate the control performance where these samples are obtained through sampling the uncertainty parameters according to a possible distribution. The SLC method is applied to three significant examples of quantum robust control including state preparation in a three-level quantum system, robust entanglement generation in a two-qubit superconducting circuit and quantum entanglement control in a two-atom system interacting with a quantized field in a cavity. Numerical results demonstrate the effectiveness of the SLC approach even when uncertainties are quite large, and show its potential for robust control design of quantum systems.

Why This Paper Matters

  • This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
  • It adds a 2015 reference point for readers tracking recent quantum research.
  • Robust control design for quantum systems has been recognized as a key task in the development of practical quantum technology.

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