Advanced Topics
This section is under development.
Entanglement with Pair Operators
For studying entanglement, use pair operator bases that can create correlations.
High-Precision Derivatives (Duhamel)
The Duhamel integration method provides high-precision quantum derivatives.
Third-Order Cumulants
The third cumulant \(\nabla G = \nabla \nabla \nabla \psi\) describes how the Fisher metric varies.
Optimisation on Manifolds
Constrained optimization techniques for quantum state spaces.
See Also
qig.duhamel- High-precision derivativesqig.pair_operators- Entangling operators