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Trapped Ion Quantum Computing

Experimental realization of direct entangling gates between dual-type qubits

arXiv
Authors: Chenxi Wang, Chuanxin Huang, Hongxuan Zhang, Hongyuan Hu, Zhichao Mao, Panyu Hou, Yukai Wu, Zichao Zhou, Luming Duan

Year

2024

Paper ID

38386

Status

Preprint

Abstract Read

~2 min

Abstract Words

127

Citations

N/A

Abstract

Dual-type qubits have become a promising way to suppress the crosstalk error of auxiliary operations in large-scale ion trap quantum computation. Here we demonstrate a direct entangling gate between dual-type qubits encoded in the S1/2 and D5/2 hyperfine manifolds of 137Ba+ ions. Our scheme is economic in the hardware, requiring only a single 532 nm laser system to entangle both qubit types by driving their Raman transitions. We achieve a Bell state fidelity of 96.3(4)\% for the dual-type Molmer-Sorensen gate between an S-D ion pair, comparable to that for the same-type S-S or D-D gates. This technique can reduce the overhead for back-and-forth conversions between dual-type qubits in the quantum circuit with wide applications in quantum error correction and ion-photon quantum networks.

Why This Paper Matters

  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2024 reference point for readers tracking recent quantum research.
  • Dual-type qubits have become a promising way to suppress the crosstalk error of auxiliary operations in large-scale ion trap quantum computation.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2410.05659 [2] arXiv https://arxiv.org/abs/2410.05659 [3] Publisher https://arxiv.org/abs/2410.05659

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