Four-dimensional Quantum Key Distribution using Position-Momentum and Polarization Correlations

2005/10/12 by M. P. Almeida, S. P. Walborn, Almeida, M. P. +3
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum Information and Cryptography #Quantum Mechanics and Applications #quant-ph

paper · pdf · doi:10.48550/arxiv.quant-ph/0510087

4 pages, 5 figures

arxiv created 2005/10/12 · arxiv updated 2009/12/01

Abstract

We demonstrate experimentally that it is possible to prepare and detect photon pairs created by spontaneous parametric down-conversion which exhibit simultaneous position-momentum and polarization correlations that are adequate to implement a four-dimensional key distribution protocol.

Related

• Generation and characterization of a source of wavelength division multiplexing quantum key distribution
• Quantum Key Distribution based on Single Photon Bi-partite Correlation
• Quantum Cryptography Using Momentum and Position Variables in a Simple Optical Arrangement
• High-bit-rate quantum key distribution with entangled internal degrees of freedom of photons
• Intrinsic-Correlation Quantum Key Generation