Ham2nqi.m

Converts a single-spin Hamiltonian back into the Zeeman and quadrupolar interaction parameters that had been used to generate it.

Syntax

                   [omega,Q]=ham2nqi(H)

Parameters

       H - single-spin Hamiltonian written in
           the Zeeman basis for a spin of any
           multiplicity

Outputs

       omega - Larmor frequencies, rad/s
           Q - symmetric traceless quadrupolar
               coupling tensor, rad/s
    The outputs are returned such that:
       H = omega(1)*Sx + omega(2)*Sy + omega(3)*Sz +
                + [Sx Sy Sz]*Q*[Sx Sy Sz].';
    An error is produced if the Hamilonian contains
    any terms (for example, cubic) beyond those, or
    if it is not Hermitian and traceless.

Examples

See examples in the Spinach distribution relevant to this function.

Notes

This page was generated from the function header in the Spinach repository.

See also

• Spin_system_specification
• Kernel_utilities
• mat2ias.m
• sphten2mat.m
• mat2sphten.m
• Main_Page

Version 2.11, authors: Ilya Kuprov