2015
DOI: 10.1088/1367-2630/17/4/043027
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Abstract: We demonstrate experimentally the feasibility of continuous variable quantum key distribution (CV-QKD) in dense-wavelength-division multiplexing networks (DWDM), where QKD will typically have to coexist with several co-propagating (forward or backward) C-band classical channels whose launch power is around 0 dBm. We have conducted experimental tests of the coexistence of CV-QKD multiplexed with an intense classical channel, for different input powers and different DWDM wavelengths. Over a 25 km fiber, a CV-QKD… Show more

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Cited by 169 publications
(111 citation statements)
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“…To estimate the finite-data-size effect, we also conduct simulations using the most recent composable security proof of CV-QKD [34]. We remark that the above realistic model has been widely adopted in CV-QKD experiments [11,12,15,17].…”
Section: Resultsmentioning
confidence: 99%
“…To estimate the finite-data-size effect, we also conduct simulations using the most recent composable security proof of CV-QKD [34]. We remark that the above realistic model has been widely adopted in CV-QKD experiments [11,12,15,17].…”
Section: Resultsmentioning
confidence: 99%
“…CV-QKD inherits several interesting features associated to the use of coherent detection instead of single-photon detectors: at the system level, CV-QKD can be implemented with off-the-shelf components that are also used and optimized in modern optical communications, allowing for a convergence between quantum and classical communications [6] and also simplifying the path and the undertaking associated to photonic integration. Coherent detectors moreover act as efficient and almost single-mode filters, leading to a superior capacity for CV-QKD to be wavelength-multiplexed with intense classical channels over WDM networks [7].…”
Section: Introductionmentioning
confidence: 99%
“…Previously, operation of QKD systems usually required dedicated SSMFs, which are not only expensive but might even be unavailable. Multiplexing QKD into data-populated SSMF has been explored, but it constrains either the communication distance or the launched data laser power and maximum bandwidth [8,[18][19][20][21][22][23][24][25]. These constraints are a consequence of signal contamination to the quantum channel by the Raman photons generated by the strong data signals in the same fiber.…”
Section: Introductionmentioning
confidence: 99%