Work

Security of continuous-variable quantum cryptography with Gaussian postselection

Year: 2013

Type: article

Abstract: We extend the security analysis of continuous variable quantum-key-distribution protocols using a family of post selection schemes to account for arbitrary eavesdropping attacks. We show that the postselection protocol is equivalent to a virtual entanglement-based protocol including a distillation stage. We introduce a particular `Gaussian' post selection and demonstrate that the security can be calculated using only experimentally accessible quantities. Finally, we explicitly evaluate the performance for the case of a noisy Gaussian channel in the limit of unbounded key length and find improvements over all pre-existing continuous variable protocols in realistic regimes.

Source: Physical Review A

DOI: 10.1103/physreva.87.020303

Authors: Nathan Walk, Timothy C. Ralph, Thomas Symul, Ping Koy Lam

Institutions: The University of Queensland, Centre for Quantum Computation and Communication Technology, Australian National University

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: bronze

Funder: Centre of Excellence for Quantum Computation and Communication Technology, Australian Research Council

OpenAlex ID: W2120186389

FWCI: 12.8

Cites: 15

Cited by: 80

Related to: 10