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In a recent work, Kryuchkov, Suslov and Vega-Guzman [20013 J. Phys. B: At.Mol. Opt. Phys. 46 104007] described a multi-parameter family ofminimum-uncertainty states satisfying the time-dependent Schrodinger equationfor the harmonic oscillator. We show how a different parametrization and aproper geometrical insight reduces a complicated set of equations to two simplecircular motions.

Comment on `The minimum-uncertainty squeezed states for atoms and photons in cavity'