Isospectral steering characterizes reachable covariance sets for the differential Lyapunov equation when the gain matrix is constrained to fixed eigenvalues, using multilinear algebra and the Birkhoff-von Neumann theorem.
Exact solutions for a universal set of quantum gates on a family of isospectral spin chains.Physical Review A—Atomic, Molecular, and Optical Physics, 72(5):052305, 2005
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Isospectral Steering
Isospectral steering characterizes reachable covariance sets for the differential Lyapunov equation when the gain matrix is constrained to fixed eigenvalues, using multilinear algebra and the Birkhoff-von Neumann theorem.