  We present two experimental schemes to perform continuous variable (2,3)
threshold quantum secret sharing on the quadratures amplitudes of bright light
beams. Both schemes require a pair of entangled light beams. The first scheme
utilizes two phase sensitive optical amplifiers, whilst the second uses an
electro-optic feedforward loop for the reconstruction of the secret. We examine
the efficacy of quantum secret sharing in terms of fidelity, as well as the
signal transfer coefficients and the conditional variances of the reconstructed
output state. We show that both schemes in the ideal case yield perfect secret
reconstruction.
