Local expansion of photonic W state using a polarization dependent beamsplitter

Details Local expansion of photonic W state using a polarization dependent beamsplitter Local expansion of photonic W state using a polarization dependent beamsplitter

2008-10-16

arxiv.org/abs/0810.2850v1

New J. Phys. 11, 023024 (2009)

Physics

Quantum Physics

10 pages, 5 figures

Scientific paper

10.1088/1367-2630/11/2/023024

We propose a simple probabilistic optical gate to expand polarization entangled W states. The gate uses one polarization-dependent beamsplitter and a horizontally polarized single photon as an ancilla. The gate post-selectively expands $N$-photon W states to $(N+1)$-photon W states. A feasibility analysis considering the realistic experimental conditions show that the scheme is within the reach of the current quantum optical technologies.

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