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arXiv · 1601.03755

Hyperconcentration for multipartite entanglement via linear optics

Xihan Li·Shohini Ghose
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Abstract

We present a hyperconcentration scheme for nonlocal $N$-photon hyperentangled Greenberger-Horne-Zeilinger states. The maximally hyperentangled state, in which $N$ particles are entangled simultaneously in the polarization and the spatial mode, can be obtained with a certain probability from two partially hyperentangled states. The hyperconcentration scheme is based on one polarization parity check measurement, one spatial mode parity check measurement and N-2 single-photon two-qubit measurements. The concentration only requires linear optical elements, which makes it feasible and practical with current technology.

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Xihan Li, Shohini Ghose. 2016-01-14. Hyperconcentration for multipartite entanglement via linear optics. https://doi.org/10.1088/1612-2011%2F11%2F12%2F125201

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