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1篇 您的检索式:作者名="Mathias Pont"
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1Orbital angular momentum based intra- and interparticle entangled states generated via a quantum dot source显示文摘Engineering single-photon states endowed with orbital angular momentum (OAM) is a powerful toolfor quantum information photonic implementations. Indeed, due to its unbounded nature, OAM is suitable forencoding qudits, allowing a single carrier to transport a large amount of information. Most of the experimentalplatforms employ spontaneous parametric down-conversion processes to generate single photons, evenif this approach is intrinsically probabilistic, leading to scalability issues for an increasing number of qudits.Semiconductor quantum dots (QDs) have been used to get over these limitations by producing on-demand pure and indistinguishable single-photon states, although only recently they have been exploitedto create OAM modes. Our work employs a bright QD single-photon source to generate a complete set ofquantum states for information processing with OAM-endowed photons. We first study hybrid intraparticleentanglement between OAM and polarization degrees of freedom of a single photon whose preparationwas certified by means of Hong–Ou–Mandel visibility. Then, we investigate hybrid interparticle OAM-based entanglement by exploiting a probabilistic entangling gate. The performance of our approach isassessed by performing quantum state tomography and violating Bell inequalities. Our results pave theway for the use of deterministic sources for the on-demand generation of photonic high-dimensionalquantum states.Alessia Suprano Danilo Zia Mathias Pont Taira Giordani Giovanni Rodari Mauro Valeri Bruno Piccirillo Gonzalo Carvacho Nicolo Spagnolo Pascale Senellart Lorenzo Marrucci Fabio Sciarrino 2023Advanced Photonics2023,5,4:0
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