Practical underwater quantum key distribution based on decoy-state BB84 protocol

• URL: http://arxiv.org/abs/2203.04598v1
• Date: Wed, 9 Mar 2022 09:31:15 GMT
• Title: Practical underwater quantum key distribution based on decoy-state BB84 protocol
• Authors: Shanchuan Dong, Yonghe Yu, Shangshuai Zheng, Qiming Zhu, Lei Gai, Wendong Li, Yongjian Gu
• Abstract summary: Polarization encoding quantum key distribution has been proven to be a reliable method to build a secure communication system. We demonstrate a decoy-state BB84 quantum key distribution system over a water channel with a compact system design for future experiments in the ocean.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Polarization encoding quantum key distribution has been proven to be a reliable method to build a secure communication system. It has already been used in inter-city fiber channel and near-earth atmosphere channel, leaving underwater channel the last barrier to conquer. Here we demonstrate a decoy-state BB84 quantum key distribution system over a water channel with a compact system design for future experiments in the ocean. In the system, a multiple-intensity modulated laser module is designed to produce the light pulses of quantum states, including signal state, decoy state and vacuum state. The classical communication and synchronization are realized by wireless optical transmission. Multiple filtering techniques and wavelength division multiplexing are further used to avoid crosstalk of different light. We test the performance of the system and obtain a final key rate of 245.6 bps with an average QBER of 1.91% over a 2.4m water channel, in which the channel attenuation is 16.35dB. Numerical simulation shows that the system can tolerate up to 21.7dB total channel loss and can still generate secure keys in 277.9m Jelov type 1 ocean channel.

Related papers

• Eavesdropper localization for quantum and classical channels via nonlinear scattering [58.720142291102135]
  Quantum key distribution (QKD) offers theoretical security based on the laws of physics. We present a novel approach to eavesdropper location that can be employed in quantum as well as classical channels. We demonstrate that our approach outperforms conventional OTDR in the task of localizing an evanescent outcoupling of 1% with cm precision inside standard optical fibers.
  arXiv  Detail & Related papers  (2023-06-25T21:06:27Z)
• Practical quantum secure direct communication with squeezed states [55.41644538483948]
  We report the first table-top experimental demonstration of a CV-QSDC system and assess its security. This realization paves the way into future threat-less quantum metropolitan networks, compatible with coexisting advanced wavelength division multiplexing (WDM) systems.
  arXiv  Detail & Related papers  (2023-06-25T19:23:42Z)
• Experimental free-space quantum key distribution over a turbulent high-loss channel [0.0]
  Compared to fiber-based communication networks, free-space networks experience significantly less decoherence and photon loss. The atmospheric turbulence contributes to deviation in transmittance distribution, which introduces noise and channel loss. Active research is currently focused on establishing secure and practical quantum communication in a high-loss channel.
  arXiv  Detail & Related papers  (2023-05-02T11:47:22Z)
• Quantum Key Distribution Using a Quantum Emitter in Hexagonal Boron Nitride [48.97025221755422]
  We demonstrate a room temperature, discrete-variable quantum key distribution system using a bright single photon source in hexagonal-boron nitride. We have generated keys with one million bits length, and demonstrated a secret key of approximately 70,000 bits, at a quantum bit error rate of 6%. Our work demonstrates the first proof of concept finite-key BB84 QKD system realised with hBN defects.
  arXiv  Detail & Related papers  (2023-02-13T09:38:51Z)
• First demonstration of a post-quantum key-exchange with a nanosatellite [58.579141089302816]
  We demonstrate a post-quantum key-exchange with the nanosatellite SpooQy-1 in low Earth orbit using Kyber-512. This implementation demonstrates the feasibility of a quantum-safe authenticated key-exchange and encryption system on SWaP constrained nanosatellites.
  arXiv  Detail & Related papers  (2022-06-02T10:45:27Z)
• Quantum key distribution over scattering channel [14.337214570878176]
  We employ the wavefront shaping technology to compensate distorted optical signals in high-loss scattering quantum channels. We achieve a typical enhancement of about 250 in transmission efficiency and improve the secure key rate from 0 to $1.85times10-6$ per sifted key.
  arXiv  Detail & Related papers  (2021-09-25T05:54:45Z)
• The limits of multiplexing quantum and classical channels: Case study of a 2.5 GHz discrete variable quantum key distribution system [0.0]
  We study the performance of a system running a simplified BB84 protocol at 2.5 GHz repetition rate. We discuss the performance of an ideal system under the same conditions. In this scenario we could exchange a secret key with a launch power up to 16.7 dBm in the classical channels.
  arXiv  Detail & Related papers  (2021-09-06T12:52:58Z)
• Experimental Demonstration of Underwater Decoy-state Quantum Key Distribution with All-optical Transmission [7.339980107894227]
  We demonstrate the underwater quantum key distribution (UWQKD) over a 10.4-meter Jerlov type III seawater channel. The system is controlled by FPGA, and can be easily integrated into watertight cabins to perform field experiment.
  arXiv  Detail & Related papers  (2021-06-25T05:49:50Z)
• Path-encoded high-dimensional quantum communication over a 2 km multicore fiber [50.591267188664666]
  We demonstrate the reliable transmission over a 2 km long multicore fiber of path-encoded high-dimensional quantum states. A stable interferometric detection is guaranteed, allowing for low error rates and the generation of 6.3 Mbit/s of secret key rate.
  arXiv  Detail & Related papers  (2021-03-10T11:02:45Z)
• Deep Denoising Neural Network Assisted Compressive Channel Estimation for mmWave Intelligent Reflecting Surfaces [99.34306447202546]
  This paper proposes a deep denoising neural network assisted compressive channel estimation for mmWave IRS systems. We first introduce a hybrid passive/active IRS architecture, where very few receive chains are employed to estimate the uplink user-to-IRS channels. The complete channel matrix can be reconstructed from the limited measurements based on compressive sensing.
  arXiv  Detail & Related papers  (2020-06-03T12:18:57Z)
• Decoy-State Quantum Key Distribution over a Long-Distance High-Loss Underwater Free-Space Channel [5.525664664021123]
  We present an experimental demonstration of underwater decoy-state quantum key distribution against high loss. We are able to for the first time reach a long-distance quantum key distribution that is unconditionally secure and can enable real-life air-sea quantum communication tasks.
  arXiv  Detail & Related papers  (2020-04-14T17:57:26Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.