Novel mixed quantum bit system

A quantum bit, a new type of technology, applied in quantum computers, photonic quantum communication, computing models, etc., can solve problems such as reduced collaborative cooling efficiency, low logic gate fidelity, and qubit crosstalk errors, and achieve large-scale quantum computing. , the effect of increasing the complexity of the system and preventing information loss
CN112434815AActive Publication Date: 2021-03-02TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2021-03-02

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Abstract

The invention discloses a novel mixed quantum bit system which comprises a first type of quantum bits and a second type of quantum bits, the first type of quantum bits and the second type of quantum bits bear different functions, and the first type of quantum bits and the second type of quantum bits are the same ions; the ions have at least two long-life energy levels, so that the first type of quantum bits and the second type of quantum bits can be coherently transferred between different long-life energy levels. According to the novel mixed quantum bit system provided by the embodiment of the invention, some long-life energy levels are selected as operation energy levels, and the rest long-life energy levels are selected as storage energy levels, so that when a part of quantum bits needto be operated, the rest quantum bits are coherently transferred to the storage energy levels for protective storage; therefore, crosstalk errors can be effectively eliminated. According to the novelmixed quantum bit system provided by the embodiment of the invention, the development of the fields of quantum networks, quantum computation, quantum precision measurement and the like can be promoted.
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Description

technical field

[0001] The invention relates to the fields of quantum network, quantum calculation, precision measurement and the like, and in particular relates to a novel hybrid qubit system. Background technique

[0002] The hybrid qubit system includes two types of qubits, namely auxiliary qubits and data qubits, which undertake different functions. The data qubits are mainly responsible for the storage and operation of quantum information, and the auxiliary qubits are mainly responsible for destructive operations. Auxiliary operation. For example, in the collaborative cooling process, laser cooling is performed on the auxiliary qubit; in the quantum error correction process, the repeated measurement operation for extracting error information is performed on the auxiliary qubit; in the quantum network construction process, in order to realize the quantum node The repeated-measurement operation performed by the entanglement between the qubits is also performed on the aux...

Claims

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