Shannon-Limit Approached Information Reconciliation for Quantum Key
Distribution
- URL: http://arxiv.org/abs/2003.03713v2
- Date: Tue, 17 Mar 2020 01:59:58 GMT
- Title: Shannon-Limit Approached Information Reconciliation for Quantum Key
Distribution
- Authors: Bang-Ying Tang and Bo Liu and Wan-Rong Yu and Chun-Qing Wu
- Abstract summary: Information reconciliation (IR) corrects the errors in sifted keys and ensures the correctness of quantum key distribution (QKD) systems.
Polar codes-based IR schemes can achieve high reconciliation efficiency, however, the incidental high frame error rate decreases the secure key rate of QKD systems.
We propose a Shannon-limit approached (SLA) IR scheme, which mainly contains two phases: the forward reconciliation phase and the acknowledgment reconciliation phase.
- Score: 3.862523920633411
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Information reconciliation (IR) corrects the errors in sifted keys and
ensures the correctness of quantum key distribution (QKD) systems. Polar
codes-based IR schemes can achieve high reconciliation efficiency, however, the
incidental high frame error rate decreases the secure key rate of QKD systems.
In this article, we propose a Shannon-limit approached (SLA) IR scheme, which
mainly contains two phases: the forward reconciliation phase and the
acknowledgment reconciliation phase. In the forward reconciliation phase, the
sifted key is divided into sub-blocks and performed with the improved block
checked successive cancellation list (BC-SCL) decoder of polar codes.
Afterwards, only the failure corrected sub-blocks perform the additional
acknowledgment reconciliation phase, which decreases the frame error rate of
the SLA IR scheme. The experimental results show that the overall failure
probability of SLA IR scheme is decreased to $10^{-8}$ and the efficiency is
improved to 1.091 with the IR block length of 128Mb. Furthermore, the
efficiency of the proposed SLA IR scheme is 1.055, approached to Shannon-limit,
when quantum bit error rate is 0.02 and the input scale of 1Gb, which is
hundred times larger than the state-of-art implemented polar codes-based IR
schemes.
Related papers
- Integrated high-performance error correction for continuous-variable quantum key distribution [23.485505158582775]
An integrated error-correction scheme with high throughput, low frame errors rate (FER) and high reconciliation efficiency under low signal to noise ratio (SNR) is proposed.
A novel two-stage error correction method with limited precision is proposed, and experimentally verified on a commercial FPGA.
Compared with state-of-art results, the error-correction throughput can be improved more than one order of magnitude given FER0.1.
The record-breaking results paves the way for large-scale deployment of high-rate integrated CV-QKD systems in metropolitan quantum secure network.
arXiv Detail & Related papers (2024-07-23T12:30:46Z) - The Road to Near-Capacity CV-QKD Reconciliation: An FEC-Agnostic Design [53.67135680812675]
A new codeword-based QKD reconciliation scheme is proposed.
Both the authenticated classical channel (ClC) and the quantum channel (QuC) are protected by separate forward error correction (FEC) coding schemes.
The proposed system makes QKD reconciliation compatible with a wide range of FEC schemes.
arXiv Detail & Related papers (2024-03-24T14:47:08Z) - Bit-flipping Decoder Failure Rate Estimation for (v,w)-regular Codes [84.0257274213152]
We propose a new technique to provide accurate estimates of the DFR of a two-iterations (parallel) bit flipping decoder.
We validate our results, providing comparisons of the modeled and simulated weight of the syndrome, incorrectly-guessed error bit distribution at the end of the first iteration, and two-itcrypteration Decoding Failure Rates (DFR)
arXiv Detail & Related papers (2024-01-30T11:40:24Z) - Fast Flux-Activated Leakage Reduction for Superconducting Quantum
Circuits [84.60542868688235]
leakage out of the computational subspace arising from the multi-level structure of qubit implementations.
We present a resource-efficient universal leakage reduction unit for superconducting qubits using parametric flux modulation.
We demonstrate that using the leakage reduction unit in repeated weight-two stabilizer measurements reduces the total number of detected errors in a scalable fashion.
arXiv Detail & Related papers (2023-09-13T16:21:32Z) - Deep Quantum Error Correction [73.54643419792453]
Quantum error correction codes (QECC) are a key component for realizing the potential of quantum computing.
In this work, we efficiently train novel emphend-to-end deep quantum error decoders.
The proposed method demonstrates the power of neural decoders for QECC by achieving state-of-the-art accuracy.
arXiv Detail & Related papers (2023-01-27T08:16:26Z) - Memoryless quantum repeaters based on cavity-QED and coherent states [0.0]
A quantum repeater scheme based on cavity-QED and quantum error correction of channel loss via rotation-symmetric bosonic codes is proposed.
A numerical simulation shows that the total fidelity and the success probability for quantum communication over a long distance can almost approach unity.
Based upon the cavity-QED setting, this scheme can be realized at room temperature and at optical frequencies.
arXiv Detail & Related papers (2022-07-06T05:21:36Z) - Appending Information Reconciliation for Quantum Key Distribution [5.975135520990673]
Information reconciliation (IR) corrects the errors in the sifted keys, which determines the secure key rate and the link distance of quantum key distribution (QKD) systems.
We propose an appending information reconciliation scheme based on polar codes, which achieves high efficiency and ultra-low failure probability simultaneously.
arXiv Detail & Related papers (2022-04-14T13:53:45Z) - Polar Codes-based Information Reconciliation Scheme with Frozen Bits
Erasure Strategy for Quantum Key Distribution [5.5233040643473315]
Information reconciliation (IR) ensures the correctness of quantum key distribution systems.
We propose a polar codes-based IR scheme with the frozen bits erasure strategy.
arXiv Detail & Related papers (2022-03-04T00:38:46Z) - Fibre polarization state compensation in entanglement-based quantum key
distribution [62.997667081978825]
Quantum Key Distribution (QKD) using polarisation encoding can be hard to implement over deployed telecom fibres.
We show a technique for dynamically compensating fibre-induced alteration in a QKD system over deployed fibre.
arXiv Detail & Related papers (2021-07-16T00:53:48Z) - Rotation Based Slice Error Correction Protocol for Continuous-variable
Quantum Key Distribution and its Implementation with Polar Codes [3.2505671255960324]
Reconciliation is an essential procedure for continuous-variable quantum key distribution (CV-QKD)
In this paper, an improved SEC protocol, named Rotation-based SEC (RSEC), is proposed through performing a random rotation on the raw data before quantization.
In terms of finite-size effects, we achieve a secret key rate of $7.83times10-3$ bits/pulse at a distance of 33.93 km.
arXiv Detail & Related papers (2021-06-11T07:25:52Z) - Round-robin differential phase-time-shifting protocol for quantum key
distribution: theory and experiment [58.03659958248968]
Quantum key distribution (QKD) allows the establishment of common cryptographic keys among distant parties.
Recently, a QKD protocol that circumvents the need for monitoring signal disturbance, has been proposed and demonstrated in initial experiments.
We derive the security proofs of the round-robin differential phase-time-shifting protocol in the collective attack scenario.
Our results show that the RRDPTS protocol can achieve higher secret key rate in comparison with the RRDPS, in the condition of high quantum bit error rate.
arXiv Detail & Related papers (2021-03-15T15:20:09Z)
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.