Control of Transverse Motion for Quantum Gates on Individually Addressed Atomic Qubits

被引：39

作者：

Cetina, M. ^{[1
,2
,3
]}

Egan, L. N. ^{[1
,2
,5
]}

Noel, C. ^{[1
,2
,3
,4
]}

Goldman, M. L. ^{[1
,2
,5
]}

Biswas, D. ^{[1
,2
]}

Risinger, A. R. ^{[1
,2
]}

Zhu, D. ^{[1
,2
,5
]}

Monroe, C. ^{[1
,2
,3
,4
,5
]}

机构：

[1] Univ Maryland, Ctr Quantum Informat & Comp Sci, Joint Quantum Inst, College Pk, MD 20742 USA

[2] Univ Maryland, Dept Phys & Elect & Comp Engn, College Pk, MD 20742 USA

[3] Duke Univ, Dept Phys, Durham, NC 27708 USA

[4] Duke Univ, Dept Elect & Comp Engn, Durham, NC 27708 USA

[5] IonQ Inc, 4505 Campus Dr, College Pk, MD 20740 USA

来源：

PRX QUANTUM | 2022年 / 3卷 / 01期

关键词：

TRAPPED IONS; ENTANGLEMENT; DYNAMICS; STATES;

D O I：

10.1103/PRXQuantum.3.010334

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Individual trapped atomic qubits represent one of the most promising technologies to scale quantum computers, owing to their low idle errors and the ability to implement a full set of reconfigurable gate operations via focused optical fields. However, the fidelity of quantum gate operations can be limited by weak confinement of the atoms transverse to the laser. We present measurements of this effect by performing individually addressed entangling gates in chains of up to 25 trapped atomic ions. We present a semiclassical model that accurately describes the observed decoherence from the residual heating of the ions caused by noisy electric fields. We suppress these effects by cotrapping ancilla ions for sympathetically cooling the qubit ions throughout a quantum circuit.

引用

页数：11

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