Work

Security of continuous-variable quantum cryptography using coherent states: Decline of postselection advantage

Year: 2005

Type: article

Abstract: We investigate the security of continuous-variable (CV) quantum key distribution (QKD) using coherent states in the presence of quadrature excess noise. We consider an eavesdropping attack that uses a linear amplifier and a beam splitter. This attack makes a link between the beam-splitting attack and the intercept-resend attack (classical teleportation attack). We also show how postselection loses its efficiency in a realistic channel.

Source: Physical Review A

DOI: 10.1103/physreva.72.024301

Authors: Ryo Namiki, Takuya Hirano

Institutions: The University of Osaka, Gakushuin University

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W1995107878

FWCI: 2.738

Cites: 15

Cited by: 20

Related to: 10