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Abstract: We demonstrate an unconditional high-fidelity teleporter capable ofpreserving the broadband entanglement in an optical squeezed state. Inparticular, we teleport a squeezed state of light and observe $-0.8 \pm 0.2$dBof squeezing in the teleported (output) state. We show that the squeezingcriterion translates directly into a sufficient criterion for entanglement ofthe upper and lower sidebands of the optical field. Thus, this resultdemonstrates the first unconditional teleportation of broadband entanglement.Our teleporter achieves sufficiently high fidelity to allow the teleportationto be cascaded, enabling, in principle, the construction of deterministicnon-Gaussian operations.



Author: Hidehiro Yonezawa, Samuel L. Braunstein, Akira Furusawa

Source: https://arxiv.org/



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