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Entanglement Swapping with Semiconductor-Generated Photons Violates Bell's Inequality.

08:00 EDT 18th October 2019 | BioPortfolio

Summary of "Entanglement Swapping with Semiconductor-Generated Photons Violates Bell's Inequality."

Transferring entangled states between photon pairs is essential in quantum communication. Semiconductor quantum dots are the leading candidate for generating polarization-entangled photons deterministically. Here we show for the first time swapping of entangled states between two pairs of photons emitted by a single dot. A joint Bell measurement heralds the successful generation of the Bell state Ψ^{+}, yielding a fidelity of 0.81±0.04 and violating the CHSH and Bell inequalities. Our photon source matches atomic quantum memory frequencies, facilitating implementation of hybrid quantum repeaters.

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This article was published in the following journal.

Name: Physical review letters
ISSN: 1079-7114
Pages: 160502

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Medical and Biotech [MESH] Definitions

Nanometer sized fragments (the dots) of semiconductor crystalline material which emit PHOTONS. The wavelength is based on the quantum confinement size of the dot. They are brighter and more persistent than organic chemical INDICATORS. They can be embedded in MICROBEADS for high throughput ANALYTICAL CHEMISTRY.

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