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Quantum state discrimination model obtaining method and device

A technology for distinguishing models and quantum states, which is applied in computing models, quantum computers, calculations, etc., can solve the problems of limited application and the inability to guarantee the accuracy of quantum state measurement data processing

Active Publication Date: 2020-06-30
HEFEI ORIGIN QUANTUM COMP TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

In the actual processing of quantum state measurement data, this type of method has the defects and shortcomings of limited application and cannot guarantee the accuracy of quantum state measurement data processing.

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  • Quantum state discrimination model obtaining method and device
  • Quantum state discrimination model obtaining method and device
  • Quantum state discrimination model obtaining method and device

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Embodiment Construction

[0045] The embodiments described below by referring to the figures are exemplary only for explaining the present application, and are not construed as limiting the present application.

[0046] The measurement and judgment of the quantum state in which the qubit is located is the key to quantum measurement and control. In the measurement process of the qubit represented by the two-level model, it is necessary to prepare the specified ground state of the qubit (ie |0> state or | 1> state), and then measure it to obtain the measurement data corresponding to the qubit read signal, and obtain the judgment result by processing the measurement data, so as to realize quantum measurement and perform quantum control according to the measurement result.

[0047] In theory, the distribution of each ground state of a qubit satisfies the standard two-dimensional Gaussian model. However, after a large number of experiments, it was found that in the process of measuring the quantum state, tw...

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Abstract

The invention belongs to the field of quantum measurement and control, and particularly relates to a method and device for obtaining a quantum state discrimination model, and the method comprises thesteps: obtaining first measurement data and second measurement data which are respectively corresponding to a quantum bit in a first quantum state and a second quantum state; processing the first measurement data and the second measurement data based on a two-dimensional Gaussian mixture model to obtain first quantum state label data and second quantum state label data which reflect the real distribution characteristics of the first quantum state and the second quantum state respectively; and training the first quantum state label data and the second quantum state label data to obtain a discrimination model for discriminating a quantum state type. According to the invention, the accuracy of the obtained discrimination model and the accuracy of the quantum state judgment result can be improved.

Description

technical field [0001] The application belongs to the field of quantum measurement and control, in particular to a method and a device for obtaining a quantum state discrimination model. Background technique [0002] Qubit is the carrier of information processing in quantum computing. It can be realized by any two-level system that satisfies the physical laws of quantum mechanics. Common physical systems include superconducting Joseph junctions, semiconductor quantum dots, and ion traps. The qubit has two states with different energies (also known as the two ground states of the qubit): |0> state and |1> state, and the qubit can be in any superposition state of |0> state and |1> state, so Accurate measurement of qubit states is a prerequisite for quantum computing. [0003] For the qubit represented by the two-level model, such as the qubit realized by the superconducting Josephson junction, during the measurement process, it is necessary to prepare the specifie...

Claims

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Application Information

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IPC IPC(8): G06N10/00
CPCG06N10/00
Inventor 赵勇杰
Owner HEFEI ORIGIN QUANTUM COMP TECH CO LTD
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