State-independent quantum tomography of a single-photon state by photon-number-resolving measurements

Adriana Lita; Aye Win; Miller Eaton; Niranjan Sridhar; Olivier Pfister; Rajveer Nehra; Reihaneh Shahrokhshahi; Sae Woo Nam; Thomas Gerrits

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State-independent quantum tomography of a single-photon state by photon-number-resolving measurements

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arxiv 1906.02093 v1 pith:HBXHN465 submitted 2019-06-05 quant-ph

Rajveer Nehra , Aye Win , Miller Eaton , Niranjan Sridhar , Reihaneh Shahrokhshahi , Thomas Gerrits , Adriana Lita , Sae Woo Nam

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Olivier Pfister

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classification quant-ph

keywords statemeasurementsphoton-number-resolvingquantumsingle-photontomographywignerassumptions

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The Wigner quasiprobability distribution of a narrowband single-photon state was reconstructed by quantum state tomography using photon-number-resolving measurements with transition-edge sensors (TES) at system efficiency 58(2)%. This method makes no assumptions on the nature of the measured state, save for the limitation on photon flux imposed by the TES. Negativity of the Wigner function was observed in the raw data without any inference or correction for decoherence.

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