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Ion optical cavity coupling system and method

A coupling system and optical cavity technology, applied in the field of optoelectronics, can solve the problem of low quantum state transfer efficiency, achieve the effect of improving quantum state transfer efficiency and avoiding half loss

Active Publication Date: 2021-11-19
HUAWEI TECH CO LTD
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Problems solved by technology

[0005] This application provides an ion optical cavity coupling system and method, which are used to solve the problem of low quantum state transfer efficiency between ions and photons in the existing ion optical cavity coupling scheme

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  • Ion optical cavity coupling system and method

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Embodiment Construction

[0070] Below, some terms in the embodiments of the present application are explained, so that those skilled in the art can understand:

[0071] Strong coupling: The coupling strength between atoms or ions and the optical cavity is far greater than the spontaneous emission intensity of atoms or ions and the attenuation rate of the optical cavity.

[0072] Distributed quantum computing: use multiple quantum nodes, each quantum node contains a system of multiple qubits to jointly complete a certain quantum computing task, and the information transmission between different quantum nodes is completed by photons carrying quantum information. Distributed quantum computing is especially suitable for some hardware systems that cannot be integrated on a large scale, and it is also especially suitable for quantum computing tasks that cannot be completed by local quantum nodes alone.

[0073] Quantum network: use photons to transmit quantum information between different quantum nodes, so ...

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Abstract

An embodiment of the present application provides an ion optical cavity coupling system and method, wherein the system includes: a first optical cavity, a second optical cavity, and an ion trap system including a pair of DC electrodes, a pair of ground electrodes, and a pair of radio frequency electrodes. At least one ion is arranged in the system, the line where the equilibrium position of at least one ion is located and the line perpendicular to the two optical cavity mirror surfaces of the first optical cavity are the center line, the second optical cavity has an included angle with the center line, and the first optical cavity It is used to obtain the quantum optical signal and send it to the ion trap system, so that the quantum information of the quantum optical signal is transferred to a single ion in the ion trap system, and the second optical cavity is used to obtain the quantum of a single ion in the ion trap system information. The technical solution improves the quantum state transfer efficiency of ions and photons.

Description

technical field [0001] The present application relates to the field of optoelectronic technology, in particular to an ion-optical cavity coupling system and method. Background technique [0002] Ion trap is a technology that combines electric and magnetic fields to capture charged particles, and is widely used in mass spectrometers, measurement of basic physical parameters, quantum computing, quantum storage, atomic clocks and other fields. Because ion traps have excellent qubit properties, they can be applied in quantum information processing, and quantum information can be transmitted without distortion in two or more quantum nodes (ion traps) by establishing a quantum network. The coupling of multiple ions and optical cavities is the core of constructing complex quantum networks and distributed quantum computing. Therefore, how to realize the strong coupling between ions and optical cavities in the ion system is the key to realizing distributed quantum computing. [000...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21K1/00
CPCG21K1/00G21K1/003G06N10/00H01J49/422H04B10/70
Inventor 曹冬阳
Owner HUAWEI TECH CO LTD
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