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Trapped Ion Quantum Computing

Controlled phase gate in exchange coupled quantum dots affected by quasistatic charge noise

arXiv
Authors: Yinan Fang

Year

2023

Paper ID

53278

Status

Preprint

Abstract Read

~2 min

Abstract Words

101

Citations

N/A

Abstract

Charge noise has been one of the main issues in realizing high fidelity two-qubit quantum gates in semiconductor based qubits. Here, we study the influence of quasistatic noise in quantum dot detuning on the controlled phase gate for spin qubits that defined on a double quantum dot. Analytical expressions for the noise averaged Hamiltonian, exchange interaction, as well as the gate fidelity are derived for weak noise covering experimental relevant regime. We also perform interleaved two-qubit randomized benchmarking analysis for the controlled phase gate and show that an exponential decay of the sequential fidelity is still valid for the weak noise.

Why This Paper Matters

  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2023 reference point for readers tracking recent quantum research.
  • Charge noise has been one of the main issues in realizing high fidelity two-qubit quantum gates in semiconductor based qubits.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2312.12892 [2] arXiv https://arxiv.org/abs/2312.12892 [3] Publisher https://arxiv.org/abs/2312.12892

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