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An optically phase-locked reference tone, prepared using carrier-suppressed optical single-sideband modulation, is multiplexed in polarisation and frequency to the 250 Mbaud quantum signal in order to provide optical frequency- and phase matching between quantum signal and local oscillator. Our concept allows for high symbol rates and can be operated at an extremely low excess-noise level, as validated by experimental measurements.<\/jats:p>","DOI":"10.22331\/q-2019-10-07-193","type":"journal-article","created":{"date-parts":[[2019,10,7]],"date-time":"2019-10-07T15:02:55Z","timestamp":1570460575000},"page":"193","source":"Crossref","is-referenced-by-count":64,"title":["Pilot-assisted intradyne reception for high-speed continuous-variable quantum key distribution with true local oscillator"],"prefix":"10.22331","volume":"3","author":[{"given":"Fabian","family":"Laudenbach","sequence":"first","affiliation":[{"name":"Security & Communication Technologies, Center for Digital Safety & Security, AIT Austrian Institute of Technology GmbH, Giefinggasse 4, 1210 Vienna, Austria"},{"name":"Quantum Optics, Quantum Nanophysics & Quantum Information, Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria"}]},{"given":"Bernhard","family":"Schrenk","sequence":"additional","affiliation":[{"name":"Security & Communication Technologies, Center for Digital Safety & Security, AIT Austrian Institute of Technology GmbH, Giefinggasse 4, 1210 Vienna, Austria"}]},{"given":"Christoph","family":"Pacher","sequence":"additional","affiliation":[{"name":"Security & Communication Technologies, Center for Digital Safety & Security, AIT Austrian Institute of Technology GmbH, Giefinggasse 4, 1210 Vienna, Austria"}]},{"given":"Michael","family":"Hentschel","sequence":"additional","affiliation":[{"name":"Security & Communication Technologies, Center for Digital Safety & Security, AIT Austrian Institute of Technology GmbH, Giefinggasse 4, 1210 Vienna, Austria"}]},{"given":"Chi-Hang Fred","family":"Fung","sequence":"additional","affiliation":[{"name":"Optical and Quantum Laboratory, Munich Research Center, Huawei Technologies Duesseldorf GmbH, Riesstrasse 25-C3, 80992 Munich, Germany"}]},{"given":"Fotini","family":"Karinou","sequence":"additional","affiliation":[{"name":"Optical and Quantum Laboratory, Munich Research Center, Huawei Technologies Duesseldorf GmbH, Riesstrasse 25-C3, 80992 Munich, Germany"}]},{"given":"Andreas","family":"Poppe","sequence":"additional","affiliation":[{"name":"Optical and Quantum Laboratory, Munich Research Center, Huawei Technologies Duesseldorf GmbH, Riesstrasse 25-C3, 80992 Munich, Germany"}]},{"given":"Momtchil","family":"Peev","sequence":"additional","affiliation":[{"name":"Optical and Quantum Laboratory, Munich Research Center, Huawei Technologies Duesseldorf GmbH, Riesstrasse 25-C3, 80992 Munich, Germany"}]},{"given":"Hannes","family":"H\u00fcbel","sequence":"additional","affiliation":[{"name":"Security & Communication Technologies, Center for Digital Safety & Security, AIT Austrian Institute of Technology GmbH, Giefinggasse 4, 1210 Vienna, Austria"}]}],"member":"9598","published-online":{"date-parts":[[2019,10,7]]},"reference":[{"key":"0","doi-asserted-by":"publisher","unstructured":"F. 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