Abstract
By analysing the action of a beamsplitter on squeezed vacuumstates (SVSs), it is found that, if the two input light beams of thebeamsplitter have the same squeezing amplitude and phase, the output stateis a two-mode SVS. If the two input light beams of the beamsplitterhave the same squeezing amplitude but a phase difference ofπ, the output state is a direct product state of two single-modeSVSs. Based on these results, we propose to distill a maximallyentangled SVS from a partially entangled SVS by using a 50/50 beamsplitterand photodetectors.
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