# density matrix

![https://www.google.com/url?sa=i\&url=https%3A%2F%2Fwww.researchgate.net%2Ffigure%2FThe-density-matrices-of-the-output-states-of-the-entangling-two-qubit-gate-In-each\_fig6\_45913682\&psig=AOvVaw17pnvRmeBvlLylKjp8qauI\&ust=1638064264550000\&source=images\&cd=vfe\&ved=0CAwQjhxqFwoTCMCinIy3t\_QCFQAAAAAdAAAAABAZ](https://4092223458-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MjY9ZUOIiOq3c33tSsV%2Fuploads%2FctjamCQNyKRFIbrv3LMK%2Fimage.png?alt=media\&token=7d53fbe6-c4e3-4f64-9dae-07ade09a72f6)

![https://www.google.com/url?sa=i\&url=https%3A%2F%2Fwww.nature.com%2Farticles%2Fs41467-017-00580-x\&psig=AOvVaw17pnvRmeBvlLylKjp8qauI\&ust=1638064264550000\&source=images\&cd=vfe\&ved=0CAwQjhxqFwoTCMCinIy3t\_QCFQAAAAAdAAAAABAf](https://4092223458-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MjY9ZUOIiOq3c33tSsV%2Fuploads%2FteP7MIC1NSCIj5zGmU5e%2Fimage.png?alt=media\&token=e7a577bc-a0d2-4865-897d-829db35dd40e)
