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: 2021-08-10
ORIGIN QUANTUM COMPUTING TECH (HEFEI) CO LTD
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[0004] Currently, there is no method to calibrate the operation of a single quantum logic gate
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[0025] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but not to be construed as a limitation of the present invention.
[0026] The function of quantum logic gate operation is to realize the mutual conversion between quantum state |0> and quantum state |1>, and the characteristics of superposition state make the process of mutual conversion complicated, but it can be achieved by constructing the Bloch representation space pair. To understand the operation of quantum logic gates, in the Bloch representation space of quantum states, any single-bit quantum state is represented as a point on the surface of the Bloch sphere, and the operation of quantum logic gates can be regarded as the transformation process from one point on the surface of the Bloch sphere to another point. . The mutual transformation on the sphere can be achieved by rotation. In fact, the transformation process can b...
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The invention discloses a calibration method belonging to the field of quantum computing, in particular to a calibration method for a single quantum logic gate operation. The calibration method includes: determining that the modulation amplitude signal is the product of an adjustable proportional constant and a first digital signal; by changing the The adjustable proportional constant determines a plurality of pulse modulation signals with different modulation amplitude signals; obtains a distribution probability value corresponding to each of the pulse modulation signals with different modulation amplitude signals; takes the adjustable proportional constant as an independent variable , with the distribution probability value as the dependent variable, perform wave shock exponential attenuation fitting, and obtain the wave shock cycle according to the fitting result, which is recorded as the standard cycle; determine the target quantum logic gate operation to be calibrated, and perform the wave shock cycle according to the target quantum logic gate operation The rotation angle and the standard period determine the value of the adjustable proportional constant of the pulse modulation signal corresponding to the operation of the target quantum logic gate. The invention can realize the calibration of single quantum logic gate operation.
Description
technical field [0001] The invention belongs to the field of quantum computing, in particular to a calibration method for 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 that contains a sufficient number and quality of qubits, and can perform extremely high-fidelity quantum logic gate operations and readings on qubits, and modulated 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 combination of standard single-quantum logic gate operations, ...
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IPC IPC(8): G06N10/00
Inventor 孔伟成
Owner ORIGIN QUANTUM COMPUTING TECH (HEFEI) CO LTD