Bright sources of polarization-entangled photon pairs are essential
components for quantum information technologies. In general, it is necessary to
introduce a resonator that combines active optical components such as an
electric optical modulator to enhance the stimulated emission of
polarization-entangled photons. It is technically difficult to perform the time
series operation to output the stimulated entangled photons in the resonator by
synchronizing laser pulses. In this paper, we propose a scheme to scale up the
stimulated emission of polarization-entangled photon pairs using a resonator
with only passive optical components. We show the theoretical aspects of the
scheme and also perform a proof-of-principle experimental demonstration of the
scheme in a double-pass configuration.Comment: 8 pages, 6 figures, Physical Review A to be publishe