A calibration method for single quantum logic gate operation

A calibration method, quantum logic technology, applied in the field of quantum computing, can solve the problem of no single quantum logic gate operation calibration, etc., to achieve the effect of calibration

Active Publication Date: 2019-03-01
HEFEI ORIGIN QUANTUM COMP TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0004] Currently, there is no method to calibra

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  • A calibration method for single quantum logic gate operation
  • A calibration method for single quantum logic gate operation
  • A calibration method for single quantum logic gate operation

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Embodiment Construction

[0025] The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0026] The function of the quantum logic gate operation is to realize the mutual conversion of qubits between the quantum state |0> and the quantum state |1>, and the characteristics of the superposition state make the process of mutual conversion complicated, but the Bloch representation space can be constructed to Quantum logic gate operation is understood. In the Bloch representational space of the quantum state, any quantum state of a single bit is expressed as a point on the surface of the Bloch sphere, and the quantum logic gate operation can be regarded as a conversion process from one point on the surface of the Bloch sphere to another point. . The mutual conversion on the sphere can be realized by rotation. In fact, the conversion process can be attributed to the combination of a ser...

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Abstract

The invention discloses a calibration method belonging to the field of quantum computing, in particular to a single quantum logic gate operation. The calibration method comprises the following steps:determining that the modulation amplitude signal is a product of an adjustable proportion constant and a first digital signal; determining a plurality of pulse modulated signals having different modulated amplitude signals by changing the adjustable proportional constant; obtaining a distribution probability value corresponding one-to-one to each of the pulse modulated signals having different modulated amplitude signals; Taking the adjustable proportional constant as an independent variable and the distribution probability value as a dependent variable, performing wave oscillation exponentialattenuation fitting, and obtaining a wave oscillation period according to the fitting result, and recording the period as a standard period; the target quantum logic gate operation to be calibrated is determined, and the value of the adjustable proportion constant of the pulse modulation signal corresponding to the target quantum logic gate operation is determined according to the rotation angleand the standard period of the target quantum logic gate operation. The invention can realize the calibration of the operation of the single quantum logic gate.

Description

technical field [0001] The invention belongs to the field of quantum computing, in particular to a method for calibrating the operation of a single quantum logic gate. Background technique [0002] Quantum computing has the potential to far exceed the performance of classical computers in solving specific problems. In order to realize a quantum computer, it is necessary to obtain a quantum chip containing a sufficient number and sufficient quality of qubits, and be able to operate and read quantum logic gates with high fidelity on qubits, and modulate pulse signals for precise quantum logic gate operations. It is the key to realize high-fidelity quantum logic gate operation. [0003] Quantum logic gate operations are divided into single quantum logic gate operations, two quantum logic gate operations and multiple quantum logic gate operations. Since all two-quantum logic gate operations can be split into a set of standard single-quantum logic gate operations, all multi-qua...

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Application Information

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IPC IPC(8): G06N10/00
Inventor 孔伟成
Owner HEFEI ORIGIN QUANTUM COMP TECH CO LTD
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