Year: 2000
Type: article
Abstract: We discuss a quantum key distribution scheme in which small phase and amplitude modulations of cw light beams carry the key information. The presence of EPR-type correlations provides the quantum protection. We identify universal constraints on the level of shared information between the intended receiver (Bob) and any eavesdropper (Eve) and use this to make a general evaluation of security. We identify teleportation as an optimum eavesdropping technique.
Source: Physical Review A
Author: T. Ralph
Institution: The University of Queensland
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2092170471