Quantum non-Gaussianity of frequency up-converted single photons
| Autor: | Aiko Samblowski, Axel Schönbeck, Jaromír Fiurášek, Christoph Baune, Roman Schnabel |
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| Rok vydání: | 2014 |
| Předmět: |
Physics
Photons Quantum Physics Photon Light FOS: Physical sciences Equipment Design Atomic and Molecular Physics and Optics Metrology Refractometry Narrowband Quantum mechanics Non-Gaussianity Quantum Theory Quantum information Quantum Physics (quant-ph) Quantum information science Quantum Parametric statistics |
| Zdroj: | Optics Express |
| Popis: | Nonclassical states of light are an important resource in today's quantum communication and metrology protocols. Quantum up-conversion of nonclassical states is a promising approach to overcome frequency differences between disparate subsystems within a quantum information network. Here, we present the generation of heralded narrowband single photons at 1550 nm via cavity enhanced spontaneous parametric downconversion (SPDC) and their subsequent up-conversion to 532 nm. Quantum non-Gaussianity (QNG), which is an important feature for applications in quantum information science, was experimentally certified for the first time in frequency up-converted states. 9 pages, 6 figures |
| Databáze: | OpenAIRE |
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