• Corpus ID: 155091319

Multicore fiber-based quantum access network

@article{Cai2019MulticoreFQ,
  title={Multicore fiber-based quantum access network},
  author={Chun Cai and Yongmei Sun and Jianing Niu and Peng Zhang and Yongrui Zhang and Yuefeng Ji},
  journal={arXiv: Quantum Physics},
  year={2019}
}
We propose a quantum access network based on multicore fiber (MCF) to scale up the number of users in quantum key distribution (QKD) networks. The MCF is used as feeder fiber and single core single mode fibers (SSMFs) are used as drop fibers. Quantum signals (QSs) are integrated with classical signals (CSs) in both MCF and SSMFs to save deployment cost since access networks are cost sensitive. Due to the integration, spontaneous Raman scattering (SRS) and intercore crosstalk (ICXT) are the main… 

Figures from this paper

References

SHOWING 1-10 OF 32 REFERENCES

Quantum secured gigabit optical access networks

A method is introduced to overcome this limitation and demonstrate coexistence of multi-user QKD and full power data traffic from a gigabit passive optical network (GPON) for the first time, highlighting that quantum protected GPON networks could be commonplace in the future.

Integrating quantum key distribution with classical communications in backbone fiber network.

This work presents for the first time, to the best of its knowledge, the integration of QKD with a commercial backbone network of 3.6 Tbps classical data at 21 dBm launch power over 66 km fiber, and demonstrates feasibility and represents an important step towards building a quantum network that coexists with the current backbone fiber infrastructure of classical communications.

Experimental integration of quantum key distribution and gigabit-capable passive optical network

This work demonstrates the integration of QKD and a commercial GPON system with fiber lengths up to 14 km, in which the maximum splitting ratio of the beam splitter reaches 1:64, and reduces the Raman noise collected at the QKKD receiver by placing the transmitter on the optical line terminal side.

Coexistence of High-Bit-Rate Quantum Key Distribution and Data on Optical Fiber

This work exploits a novel temporal-filtering effect for noisephoton rejection that allows high-bit-rate QKD over fibers up to 90 km in length and populated with error-free bidirectional Gb=s data communications.

Ultra-high capacity WDM-SDM optical access network with self-homodyne detection downstream and 32QAM-FBMC upstream.

The results show that a 4 × 6 × 200-Gb/s DS transmission can be realized over 37 km 7-core fiber without carrier frequency offset (CFO) and phase noise (PN) compensation even using 10 MHz linewidth DFB lasers.

Optimized channel allocation scheme for jointly reducing four-wave mixing and Raman scattering in the DWDM-QKD system.

Simulation results verify that the JOCA scheme can increase the secure key generation rate and transmission distance, and that it also enables the DWDM-QKD system to tolerate higher-power classical signals and more classical channels, which improve the compatibility with a high-capacity communication system.

Experimental demonstration of large capacity WSDM optical access network with multicore fibers and advanced modulation formats.

The proposed architecture provides additional dimension for high speed mobile signal transmission and it is demonstrated an upstream delivery of 20Gb/s per wavelength with QPSK modulation formats using the inner core of MCF emulating a mobile backhaul service.

All-photonic intercity quantum key distribution

This work presents a QKD protocol that could supersede even quantum repeaters for connectingQKD networks in different cities below 800 km distant, and uses only a single intermediate node with optical devices, requiring neither quantum memories nor quantum error correction.

Quantum key distribution and 1 Gbps data encryption over a single fibre

This work performs quantum key distribution over a single fibre in the presence of four classical channels in a C-band dense wavelength division multiplexing (DWDM) configuration using a commercial QKD system, successfully distil secret keys over fibre spans of up to 50 km.

A quantum access network

It is shown that a high-speed single-photon detector positioned at a network node can be shared between up to 64 users for exchanging secret keys with the node, thereby significantly reducing the hardware requirements for each user added to the network.