Work

Two-way deterministic quantum key distribution against detector-side-channel attacks

Year: 2013

Type: article

Abstract: In a two-way deterministic quantum key distribution (DQKD) protocol, Bob randomly prepares qubits in one of four states and sends them to Alice. To encode a bit, Alice performs an operation on each received qubit and returns it to Bob. Bob then measures the backward qubits to learn about Alice's operations and hence the key bits. Recently, we proved the unconditional security of the final key of this protocol in the ideal device setting. In this paper, we prove that two-way DQKD protocols are immune to all detector-side-channel attacks at Bob's side, while we assume ideal detectors at Alice's side for error testing. Our result represents a step forward in making DQKD protocols secure against general detector-side-channel attacks.

Source: Physical Review A

DOI: 10.1103/physreva.88.044302

Authors: Hua Lu, Chi-Hang Fred Fung, Qing-yu Cai

Institutions: Chinese Academy of Sciences, Wuhan Institute of Physics and Mathematics, Hubei University of Technology, University of Hong Kong

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: bronze

Funder: National Natural Science Foundation of China

Awards: G2434886541, 模拟黑洞辐射谱的性质及其幺正性问题的研究