Method for manipulating charged particles

By using electromagnetic traps and entangled electrodes in quantum computing, the challenges of qubit manipulation and entanglement generation are solved, enabling high-fidelity quantum logic operations and quantum entanglement, simplifying the manufacturing process and reducing power consumption.

CN115315710BActive Publication Date: 2026-03-17OXFORD IONICS LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-03-31
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

Existing technologies face challenges in achieving high-fidelity quantum logic operations and scaling to a larger number of qubits, especially when using trapped charged particles for quantum sensing and computation, where it is difficult to effectively generate quantum entanglement.

Method used

Electromagnetic traps are used to trap charged particles at specific locations, providing a static magnetic field and combining it with entangled electrodes to generate an oscillating magnetic field. This ensures that the oscillating magnetic field does not directly couple the quantum bit transition. Coplanar waveguides and short-circuit connectors are used to design entangled electrodes to generate spin correlation forces, thereby achieving quantum entanglement between charged particles.

Benefits of technology

It achieves high-fidelity qubit manipulation and quantum entanglement, reduces the fidelity limitations imposed by laser technology, simplifies the manufacturing process, reduces power consumption, and improves system scalability.

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Abstract

A method is presented that includes trapping a charged particle at a first location using an electromagnetic trap and providing a static magnetic field at the first location such that a quantum bit transition of the charged particle is confined and providing an oscillating magnetic field using an entangling electrode. The oscillating magnetic field present at the first location does not contain a polarization component that directly couples to the quantum bit transition. At the first location, the oscillating magnetic field has a spatial gradient of the polarization component of the oscillating magnetic field that couples the quantum bit transition to a motion of the charged particle.
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Citation Information

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