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arXiv · 1410.6823

Generation of hybrid entanglement between a single-photon polarization qubit and a coherent state

Hyukjoon Kwon·Hyunseok Jeong
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Abstract

We propose a scheme to generate entanglement between a single-photon qubit in the polarization basis and a coherent state of light. The required resources are a superposition of coherent states, a polarization entangled photon pair, beam splitters, the displacement operation, and four photodetectors. Even when realistic detectors with a limited efficiency are used, an arbitrarily high fidelity can be obtained by adjusting a beam-splitter ratio and the displacement amplitude at the price of reducing the success probability. Our analysis shows that high fidelities may be obtained using on-off detectors with low efficiencies and available resource states under current technology.

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Hyukjoon Kwon, Hyunseok Jeong. 2015-02-03. Generation of hybrid entanglement between a single-photon polarization qubit and a coherent state. https://doi.org/10.1103/physreva.91.012340

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