qig

Quantum information geometry primitives.

Install

[dependencies]
qig = "0.1"

Example

use qig::fidelity;

let rho = [0.9, 0.1]; // Diagonal of density matrix
let sigma = [0.1, 0.9];

// Classical fidelity (Bhattacharyya coefficient)
let f = fidelity(&rho, &sigma);
assert!(f > 0.0 && f < 1.0);

License

MIT OR Apache-2.0