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Progress of quantum entanglement in a trapped-ion based quantum computer
- Title
- Progress of quantum entanglement in a trapped-ion based quantum computer
- Authors
- Yum, Dahyun; Choi, Taeyoung
- Ewha Authors
- 최태영; 염다현
- SCOPUS Author ID
- 최태영; 염다현
- Issue Date
- 2022
- Journal Title
- CURRENT APPLIED PHYSICS
- ISSN
- 1567-1739
1878-1675
- Citation
- CURRENT APPLIED PHYSICS vol. 41, pp. 163 - 177
- Keywords
- Quantum computer; Trapped ions; Single qubit gate; Two qubit gate; Entanglement
- Publisher
- ELSEVIER
- Indexed
- SCIE; SCOPUS; KCI
- Document Type
- Article
- Abstract
- In recent years, there have been significant progress toward building a practical quantum computer, demon-strating key ingredients such as single-qubit gates and a two-qubit entangling gate. Among various physical platforms for a potential quantum computing processor, a trapped-ion system has been one of the most promising platforms due to long coherence times, high-fidelity quantum gates, and qubit connectivity. However, scaling up the number of qubits for a practical quantum computing faces a core challenge in operating high-fidelity quantum gates under influence from neighboring qubits. In particular, for the trapped-ion system, unwanted quantum crosstalk between qubits and ions' quantum motional states hinder performing high-fidelity entan-glement as the number of ions increases. In this review, we introduce a trapped-ion system and explain how to perform single-qubit gates and a two-qubit entanglement. Moreover, we mainly address theoretical and exper-imental approaches to achieve high-fidelity and scalable entanglement toward a trapped-ion based quantum computer.
- DOI
- 10.1016/j.cap.2022.06.011
- Appears in Collections:
- 자연과학대학 > 물리학전공 > Journal papers
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