Direct observation of sub-binomial light.
Nonclassical states of light are necessary resources for quantum technologies such as cryptography, computation and the definition of metrological standards. Observing signatures of nonclassicality generally requires inferring either the photon number distribution or a quasiprobability distribution...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2013
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| _version_ | 1797083847768145920 |
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| author | Bartley, T Donati, G Jin, X Datta, A Barbieri, M Walmsley, I |
| author_facet | Bartley, T Donati, G Jin, X Datta, A Barbieri, M Walmsley, I |
| author_sort | Bartley, T |
| collection | OXFORD |
| description | Nonclassical states of light are necessary resources for quantum technologies such as cryptography, computation and the definition of metrological standards. Observing signatures of nonclassicality generally requires inferring either the photon number distribution or a quasiprobability distribution indirectly from a set of measurements. Here, we report an experiment in which the nonclassical character of families of quantum states is assessed by direct inspection of the outcomes from a multiplexed photon counter. This scheme does not register the actual photon number distribution; the statistics of the detector clicks alone serve as a witness of nonclassicality, as proposed by Sperling et al. [Phys. Rev. Lett. 109, 093601 (2012)]. Our work paves a way for the practical characterization of increasingly sophisticated states and detectors. |
| first_indexed | 2024-03-07T01:47:16Z |
| format | Journal article |
| id | oxford-uuid:98d95a33-3fc7-44c6-91cb-c2544a1c505d |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:47:16Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:98d95a33-3fc7-44c6-91cb-c2544a1c505d2022-03-27T00:09:54ZDirect observation of sub-binomial light.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:98d95a33-3fc7-44c6-91cb-c2544a1c505dEnglishSymplectic Elements at Oxford2013Bartley, TDonati, GJin, XDatta, ABarbieri, MWalmsley, INonclassical states of light are necessary resources for quantum technologies such as cryptography, computation and the definition of metrological standards. Observing signatures of nonclassicality generally requires inferring either the photon number distribution or a quasiprobability distribution indirectly from a set of measurements. Here, we report an experiment in which the nonclassical character of families of quantum states is assessed by direct inspection of the outcomes from a multiplexed photon counter. This scheme does not register the actual photon number distribution; the statistics of the detector clicks alone serve as a witness of nonclassicality, as proposed by Sperling et al. [Phys. Rev. Lett. 109, 093601 (2012)]. Our work paves a way for the practical characterization of increasingly sophisticated states and detectors. |
| spellingShingle | Bartley, T Donati, G Jin, X Datta, A Barbieri, M Walmsley, I Direct observation of sub-binomial light. |
| title | Direct observation of sub-binomial light. |
| title_full | Direct observation of sub-binomial light. |
| title_fullStr | Direct observation of sub-binomial light. |
| title_full_unstemmed | Direct observation of sub-binomial light. |
| title_short | Direct observation of sub-binomial light. |
| title_sort | direct observation of sub binomial light |
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