TY - JOUR
T1 - Progress of quantum entanglement in a trapped-ion based quantum computer
AU - Yum, Dahyun
AU - Choi, Taeyoung
N1 - Funding Information:
This work was funded by Samsung Research Funding Incubation Center of Samsung Electronics ( SRFC-IT1901-09 ) and by the National Research Foundation of Korea ( 2021M3E4A1038534 , 2022R1A4A2000835 , 2021R1A2C2095527 ).
Publisher Copyright:
© 2022 Korean Physical Society
PY - 2022/9
Y1 - 2022/9
N2 - In recent years, there have been significant progress toward building a practical quantum computer, demonstrating 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 entanglement 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 experimental approaches to achieve high-fidelity and scalable entanglement toward a trapped-ion based quantum computer.
AB - In recent years, there have been significant progress toward building a practical quantum computer, demonstrating 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 entanglement 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 experimental approaches to achieve high-fidelity and scalable entanglement toward a trapped-ion based quantum computer.
KW - Entanglement
KW - Quantum computer
KW - Single qubit gate
KW - Trapped ions
KW - Two qubit gate
UR - http://www.scopus.com/inward/record.url?scp=85134209347&partnerID=8YFLogxK
U2 - 10.1016/j.cap.2022.06.011
DO - 10.1016/j.cap.2022.06.011
M3 - Review article
AN - SCOPUS:85134209347
SN - 1567-1739
VL - 41
SP - 163
EP - 177
JO - Current Applied Physics
JF - Current Applied Physics
ER -