Journal
OPTICS EXPRESS
Volume 21, Issue 6, Pages 6670-6680Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.21.006670
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- Danish Agency for Science Technology and Innovation
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It has been shown that entanglement distillation of Gaussian entangled states by means of local photon subtraction can be improved by local Gaussian transformations. Here we show that a similar effect can be expected for the distillation of an asymmetric Gaussian entangled state that is produced by a single squeezed beam. We show that for low initial entanglement, our largely simplified protocol generates more entanglement than previous proposed protocols. Furthermore, we show that the distillation scheme also works efficiently on decohered entangled states as well as with a practical photon subtraction setup. (c) 2013 Optical Society of America
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