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Updated: Jul 21, 2025
11:45
Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
Published on: August 17, 2017
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Coherent Control of Trapped-Ion Qubits with Localized Electric Fields
R Srinivas1,2, C M Löschnauer1, M Malinowski1
1Oxford Ionics, Oxford, OX5 1PF, United Kingdom.
Physical Review Letters
|July 28, 2023
Summary
We developed a new method for controlling trapped ion qubits using localized electric fields. This technique enables precise manipulation of qubit states in multizone traps for quantum computing applications.
Area of Science:
- Quantum Information Science
- Atomic Physics
- Quantum Computing Hardware
Background:
- Coherent control of trapped ion qubits is essential for quantum computation.
- Existing methods often lack precise spatial control within multizone traps.
Purpose of the Study:
- To introduce a novel method for localized coherent control of trapped ion qubits.
- To enable independent manipulation of qubits in separate zones of a multizone trap.
Main Methods:
- Simultaneously applying an electric field and a spin-dependent gradient to trapped ions.
- Utilizing laser-based and magnetic-field gradients in a surface-electrode ion trap.
- Measuring the spatial localization of the applied electric field.
Main Results:
- Demonstrated coherent control over single-qubit rotations with phase and amplitude dependent on the localized electric field.
- Verified the precise localization of the electric field within specific zones of the trap.
- Established a new technique for addressing individual qubits in a multizone ion trap.
Conclusions:
- The presented method offers precise, localized control over trapped ion qubits.
- This technique is a significant advancement for scalable quantum computing architectures.
- The findings pave the way for more complex quantum operations in multizone traps.
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