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Journal Article

Demonstration of cluster-state shaping and quantum erasure for continuous variables

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Filip,  Radim
Max Planck Research Group, Max Planck Institute for the Science of Light, Max Planck Society;

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van Loock,  Peter
van Loock Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Miwa, Y., Ukai, R., Yoshikawa, J.-i., Filip, R., van Loock, P., & Furusawa, A. (2010). Demonstration of cluster-state shaping and quantum erasure for continuous variables. PHYSICAL REVIEW A, 82(3): 032305. doi:10.1103/PhysRevA.82.032305.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6AB3-1
Abstract
We demonstrate experimentally how to remove an arbitrary node from a continuous-variable cluster state and how to shorten any quantum wires of such a state. These two basic operations, performed in an unconditional fashion, are a manifestation of quantum erasure and can be employed to obtain various graph states from an initial cluster state. Starting with a sufficiently large cluster, the resulting graph states can then be used for universal quantum information processing. In the experiment, all variations of this cluster shaping are demonstrated on a four-mode linear cluster state through homodyne measurements and feedforward.