Demonstration of Cluster State Shaping and Quantum Erasure for Continuous Variables

Details Demonstration of Cluster State Shaping and Quantum Erasure for Continuous Variables Demonstration of Cluster State Shaping and Quantum Erasure for Continuous Variables

2010-06-11

arxiv.org/abs/1006.2225v1

Phys. Rev. A 82, 032305 (2010)

Physics

Quantum Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevA.82.032305

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.

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