Demonstration of Cluster State Shaping and Quantum Erasure for Continuous Variables
arXiv:1006.2225 · doi:10.1103/PhysRevA.82.032305
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.
5 pages, 3 figures
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- Building a large-scale quantum computer with continuous-variable optical technologies
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