Accession Number:

ADA566140

Title:

Novel Nonclassical-light-assisted Protocols for Quantum Key Distribution

Descriptive Note:

Final rept. 1 Apr-31 Dec 2010

Corporate Author:

MATHSENSE ANALYTICS ALTADENA CA

Personal Author(s):

• Yurtsever, Ulvi
• Dowling, Jonathan P.

Report Date:

2011-01-30

Pagination or Media Count:

8.0

Abstract:

During our Phase I period of performance, we have investigated a competing technology to the decoy-state protocol for QKD quantum key distribution based on the use of entangled light pulses randomly mixed with Weak Laser Pulses WLP, the so-named NCBB84 protocols, where the WLP are used exactly as in the standard BB84 Bennett Brassard 1984 protocol. Our theoretical work has identified a number of promising NCBB84 candidates, among which is the entangled decoy state protocol, which at this moment appears optimal. The entangled decoy state approach is especially promising from a practical standpoint because it allows a homodyne detection scheme to be used as opposed to photon-number-counting detectors needed by the standard decoy-state approach. Consequently, detectors with much higher efficiencies and lower dark-count rates can be used with our new scheme, increasing the key generation rate.

Descriptors:

• *LIGHT PULSES
• *QUANTUM THEORY
• CRYPTOGRAPHY
• DECOYS
• DETECTORS
• EFFICIENCY
• LASER BEAMS
• LOW STRENGTH
• MOMENTS

Subject Categories:

• Quantum Theory and Relativity

Distribution Statement:

APPROVED FOR PUBLIC RELEASE