利用局域电场对囚禁离子量子比特进行相干控制。

Coherent Control of Trapped-Ion Qubits with Localized Electric Fields.

作者信息

Srinivas R, Löschnauer C M, Malinowski M, Hughes A C, Nourshargh R, Negnevitsky V, Allcock D T C, King S A, Matthiesen C, Harty T P, Ballance C J

机构信息

Oxford Ionics, Oxford, OX5 1PF, United Kingdom.

Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford, OX1 3PU, United Kingdom.

出版信息

Phys Rev Lett. 2023 Jul 14;131(2):020601. doi: 10.1103/PhysRevLett.131.020601.

DOI:10.1103/PhysRevLett.131.020601

PMID:37505962

Abstract

We present a new method for coherent control of trapped ion qubits in separate interaction regions of a multizone trap by simultaneously applying an electric field and a spin-dependent gradient. Both the phase and amplitude of the effective single-qubit rotation depend on the electric field, which can be localized to each zone. We demonstrate this interaction on a single ion using both laser-based and magnetic-field gradients in a surface-electrode ion trap, and measure the localization of the electric field.

摘要

我们提出了一种新方法，通过同时施加电场和自旋相关梯度，在多区阱的不同相互作用区域对囚禁离子量子比特进行相干控制。有效单量子比特旋转的相位和幅度均取决于电场，而电场可局域于每个区域。我们在表面电极离子阱中利用基于激光的梯度和磁场梯度，在单个离子上演示了这种相互作用，并测量了电场的局域化情况。