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arXiv:quant-ph/0110168 · Physical Review A

Generation of entangled photon states by using linear optical elements

Xu‐Bo Zou, K. Pahlke, Wolfgang M. Mathis

Published Jul 18, 2002• 52 citations
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Abstract

We present a scheme to generate the polarization-entangled two-photon state $1/\sqrt{2}(|H〉|V〉+|V〉|H〉),$ which is of much interest in the field of quantum information processing. Furthermore, we demonstrate the capability of this concept in respect of a generalization to entangle N-photon states for interferometry and lithography. This scheme requires single-photon sources, linear optical elements, and a multifold coincidence detection.

DOI
10.1103/physreva.66.014102

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We present a scheme to generate the polarization-entangled two-photon state 1/2(∣H〉∣V〉+∣V〉∣H〉),1/\sqrt{2}(|H〉|V〉+|V〉|H〉),1/2​(∣H〉∣V〉+∣V〉∣H〉), which is of much interest in the field of quantum information processing. Furthermore, we demonstrate the capability of this concept in respect of a generalization to entangle N-photon states for interferometry and lithography. This scheme requires single-photon sources, linear optical elements, and a multifold coincidence detection.
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