The classical Rayleigh quotient iteration (RQI) allows one to compute a one-dimensional invariant subspace of a symmetric matrix A. Here we propose a generalization of the RQI which computes a ...

Heydar Radjavi, Peter Rosenthal, On Invariant Subspaces and Reflexive Algebras, American Journal of Mathematics, Vol. 91, No. 3 (Jul., 1969), pp. 683-692 ...

This study demonstrates how integrating decoherence-free subspaces with dynamical decoupling enhances quantum state fidelity, offering a practical route to more noise-resilient quantum computing ...