Pure State Representation using density matrix
As we can see here (https://eye.kohei-kevin.com/2023/07/01/note-machine-learning-with-quantum-computers-2/), a pure state vector is represented as following But, if we use density matrix…
kevin-tofu Note : Optimal Quantum Circuits for General Two-Qubit Gates
About Optimal Quantum Circuits for General Two-Qubit Gates Magic Basis Theorem 1 Theorem 3 Every two-qubit quantum gate in SO(4)…
Count files in a hierarchical directory
To count all JPEG files in a hierarchical directory in Linux, an efficient way is to use the find command.
Panoptic Quality (PQ)
About Panoptic Quality (PQ) is an evaluation metric for panoptic segmentation, designed to integrate and assess the quality of both…
File Management Sample(Bash)
Move image files in directories where exist in the current directory to current directory Remove directories where exist in current…
Distinguish Unitary U and Special Unitary SU
The difference The effect to Quantum Bit It causes global phase on qubit The representation using Hermite As we can…
Matplotlib: Put values on bar graph
import matplotlib.pyplot as plt categories = ['Category A', 'Category B', 'Category C'] values = [10, 15, 7] fig = plt.figure()…
The Bayesian Information Criterion (Comparison with VBM)
The Bayesian Information Criterion (BIC) is a measure used for statistical model selection. It helps to determine which model is…
Ridge Regression
About Ridge regression is a linear regression method that estimates weight parameters based on a nonlinear function basis. Note that…
Pick up a sample from Multivariate Gaussian Distribution
About Pick up a sample from Multi-Variant Gaussian Distribution is sometimes important for applications like Gaussian Process. Multivariate Gaussian Distribution…