Experimental Fock-state bunching capability of non-ideal single-photon states

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F21%3A73607243" target="_blank" >RIV/61989592:15310/21:73607243 - isvavai.cz</a>
Result on the web
<a href="https://www.osapublishing.org/optica/fulltext.cfm?uri=optica-8-5-743&id=451164" target="_blank" >https://www.osapublishing.org/optica/fulltext.cfm?uri=optica-8-5-743&id=451164</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1364/OPTICA.419230" target="_blank" >10.1364/OPTICA.419230</a>

Result language
angličtina
Original language name
Experimental Fock-state bunching capability of non-ideal single-photon states
Original language description
Advanced quantum technologies, as well as fundamental tests of quantum physics, crucially require the interference of multiple single photons in linear-optics circuits. This interference can result in the bunching of photons into higher Fock states, leading to a complex bosonic behavior. These challenging tasks timely require to develop collective criteria to benchmark many independent initial resources. Here we determine whether n independent imperfect single photons can ultimately bunch into the Fock state vertical bar n >. We thereby introduce an experimental Fock-state bunching capability for single-photon sources, which uses phase-space interference for extreme bunching events as a quantifier. In contrast to autocorrelation functions, this operational approach takes into account not only residual multi-photon components but also a vacuum admixture and the dispersion of individual photon statistics. We apply this approach to high-purity single photons generated from an optical parametric oscillator and show that they can lead to a Fock-state capability of at least 14. Our work demonstrates a novel collective benchmark for single-photon sources and their use in subsequent stringent applications.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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