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A cost-effective global quantum Internet may be developed using the existing communication infrastructure. This article examines the quantum version of three conventional wavelength-division
This paper reports the designing and numerical analysis of dense wavelength-division multiplexed (DWDM) transmission in an integrated passive optical network (PON)-free-space optics
In this study, the authors discuss some of the major practical limiting factors for QKD performance such as spontaneous Raman scattering, four-wave mixing, and amplified spontaneous
To solve these two problems, we propose a dense wavelength division multiplexing (DWDM) based quantum alarm, which multiplex the classical and quantum signal, and randomly
To commercialise QKD technology successfully, it should be integrated with dense wavelength division multiplexing optical transport. However, various challenges limit the QKD''s...
Apart from increasing the transmission capacity, wavelength division multiplexing also adds flexibility to complex communication systems. In particular, different
Here, an 8×240 Gbps DWDM transmitter at O band is demonstrated on a lithium-tantalate-on-insulator platform through proposing a robust flat-top optical filter based on a novel
In this work, we demonstrate a four-node photonic QKD network that employs versatile and cost-effective wavelength-division multiplexing across three transmitters in the O and C bands to
In this paper, we develop and discuss methods for various wavelength-division-multiplexing and multiple-access (WDM) communication systems and networks in fully quantum
Apart from increasing the transmission capacity, wavelength division multiplexing also adds flexibility to complex communication systems. In particular, different data channels can be injected at different
To commercialise QKD technology successfully, it should be integrated with dense wavelength division multiplexing optical transport. However, various
We present a novel multi-channel wavelength division (de)multiplexer (WDM) with unprecedented compactness and efficiency. To be more precise, our WDMs with four, five, and six