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System and method for coupling of ions and optical cavities

A coupling system and optical cavity technology, applied in the field of optoelectronics, can solve the problem of low quantum state transfer efficiency

Active Publication Date: 2020-02-21
HUAWEI TECH CO LTD
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  • Claims
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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

Method used

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  • System and method for coupling of ions and optical cavities
  • System and method for coupling of ions and optical cavities
  • System and method for coupling of ions and optical cavities

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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

The invention provides a system and method for coupling of ions and optical cavities. The system includes a first optical cavity, a second optical cavity and an ion trap system, wherein the ion trap system includes a DC electrode pair, a ground electrode pair and a radio frequency electrode pair, at least one ion is arranged in the ion trap system, the straight line in which the equilibrium position of at least one ion is arranged is adopted as the center line, and the center line is perpendicular to the two optical cavity mirror surfaces of the first optical cavity; and an angle is formed bythe second optical cavity and the center line, the first optical cavity is used for acquiring quantum optical signals and sending the acquired quantum optical signals to the ion trap system so that the quantum information of the quantum optical signals is transferred to the single ion in the ion trap system, and the second optical cavity is used for acquiring the quantum information of the singleion in the ion trap system. Through the technical scheme, the quantum state transfer efficiency of ions and photons is improved.

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...

Claims

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Application Information

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IPC IPC(8): G21K1/00
CPCG21K1/00G21K1/003G06N10/40G06N10/00H01J49/422H04B10/70
Inventor 曹冬阳
Owner HUAWEI TECH CO LTD
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