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arXiv · 1702.03944

Photon Bell-State Analysis Based on Semiconductor-Superconductor Structures

Evyatar Sabag·Shlomi Bouscher·Raja Marjieh·Alex Hayat
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Abstract

We propose a compact and highly-efficient scheme for complete Bell-state analysis using two-photon absorption in a superconducting proximity region of a semiconductor avalanche photodiode. One-photon transitions to the superconducting Cooper-pair based condensate in the conduction band are forbidden, whereas two-photon transitions are allowed and are strongly enhanced by superconductivity. This Cooper-pair based two-photon absorption results in a strong detection preference of a specified entangled state. Our analysis shows high detection purity of the desired Bell state with negligible false detection probability. The theoretically-demonstrated concept can pave the way towards practical realizations of advanced quantum information schemes.

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Evyatar Sabag, Shlomi Bouscher, Raja Marjieh, Alex Hayat. 2017-02-13. Photon Bell-State Analysis Based on Semiconductor-Superconductor Structures. https://doi.org/10.1103/physrevb.95.094503

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