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arXiv · 0810.2850

Local expansion of photonic W state using a polarization dependent beamsplitter

Toshiyuki Tashima·Sahin Kaya Ozdemir·Takashi Yamamoto·Masato Koashi·Nobuyuki Imoto
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Abstract

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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Toshiyuki Tashima, Sahin Kaya Ozdemir, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto. 2008-10-16. Local expansion of photonic W state using a polarization dependent beamsplitter. https://doi.org/10.1088/1367-2630%2F11%2F2%2F023024

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