Toward Efficient Quantum Key Distribution Reconciliation

• 作者: Ammar Bouallegue Houria Rezig Nedra Benletaief
• 来源期刊: 量子信息科学期刊(英文)
• 学科: 工学
• 关键词: Quantum Key Distribution BB84 Protocol RECONCILIATION TURBO CODES LOW-DENSITY PARITY Check CODES
• 年，卷（期）: 2014,（2）
• 页码范围: 117-128
• 页数: 12页
• 分类号: TN91

摘要

In this paper, we propose how to construct a reconciliation method for the BB84 Quantum Key Distribution (QKD) protocol. Theoretically, it is unconditionally secure because it is based on the quantum laws of physics, rather than the assumed computational complexity of mathematical problems. BB84 protocol performances can be reduced by various errors and information leakages such as limited intrinsic efficiency of the protocol, imperfect devices and eavesdropping. The proposed reconciliation method allowed to weed out these errors by using Turbo codes. Since their high error correction capability implies getting low errors, this method has high performance especially when compared to the last method presented in the literature based on Low-Density Parity Check codes (LDPC). In particular, we demonstrate that our method leads to a significant improvement of the protocol security and of the Bit Error Rate (BER) even with great eavesdropping capability.