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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/7750
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dc.contributor.authorPradosh, K N-
dc.contributor.authorAdwaith, K V-
dc.contributor.authorMeena, M.S.-
dc.contributor.authorNarayanan, Andal-
dc.date.accessioned2021-04-05T06:55:04Z-
dc.date.available2021-04-05T06:55:04Z-
dc.date.issued2021-02-
dc.identifier.citationApplied Physics Letters, 2021, Vol.118, p064001en_US
dc.identifier.issn0003-6951-
dc.identifier.issn1077-3118(Online)-
dc.identifier.urihttp://hdl.handle.net/2289/7750-
dc.descriptionRestricted Accessen_US
dc.description.abstractWe experimentally demonstrate binary phase-shift keying and multi-stage four phase shift keying of a microwave carrier and its corresponding demodulation in the optical regime using room temperature Rb atoms. We use a cyclic three-level scheme in 85Rb atoms to achieve this. The importance of our scheme is that the cyclic, closed interaction of the atomic levels with electromagnetic fields makes our system inherently sensitive to the phase of the microwave field. This enables our system to directly encode a phase modulated digital signal in the microwave field and decode it as intensity modulation in the optical field. We measure the correlation of our demodulated optical signal with an ideal template and establish a viable signal bandwidth of about 1 MHz. Our atomic scheme also enables phase dependent amplification of the demodulated optical signal through a hybrid second order nonlinearity. This phase dependent atomic antenna has inherent features of demodulation, radio-to-optical conversion, and amplification. The ground states used in our scheme are quantum memory storage spin states, which makes our scheme inherently suitable for applications involving communication and storage and retrieval of quantum signals.en_US
dc.language.isoenen_US
dc.publisherAIP Publishingen_US
dc.relation.urihttps://ui.adsabs.harvard.edu/abs/2021ApPhL.118f4001P/abstracten_US
dc.relation.urihttps://aip.scitation.org/doi/10.1063/5.0036552en_US
dc.rights2021 Author(s).en_US
dc.titleDigital communication using a cyclic level scheme in an atomic radio-over-fiber deviceen_US
dc.typeArticleen_US
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