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Proceedings Paper

Hyperentangled states and free-space quantum cryptography
Author(s): Alexander V. Sergienko; Mete Atature; Giovanni Di Giuseppe; Gregg S. Jaeger; Bahaa E. A. Saleh; Malvin C. Teich
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Paper Abstract

We describe the development of a quantum key distribution (QKD) scheme based on ultrafast laser pumped sources of entangled photon pairs and the engineering of their entanglement properties. Though quantum entanglement has been shown to be a useful resource for quantum key distribution, little work has been carried out in making use of the full range of joint entanglement behavior present in hyper-entangled photon pairs. We consider the principal advantages of our QKD scheme in connection with the way it makes use of ultrafast laser pumped spontaneous parametric down-conversion and hyper-entanglement. In particular, we consider how polarization quantum interference may be modified by manipulating the spatial features of the down-converted light.

Paper Details

Date Published: 9 December 2002
PDF: 12 pages
Proc. SPIE 4821, Free-Space Laser Communication and Laser Imaging II, (9 December 2002); doi: 10.1117/12.450941
Show Author Affiliations
Alexander V. Sergienko, Boston Univ. (United States)
Mete Atature, Boston Univ. (United States)
Giovanni Di Giuseppe, Boston Univ. (United States)
Istituto Elettrotecnico Nazionale Galileo Ferraris (Italy)
Gregg S. Jaeger, Boston Univ. (United States)
Bahaa E. A. Saleh, Boston Univ. (United States)
Malvin C. Teich, Boston Univ. (United States)


Published in SPIE Proceedings Vol. 4821:
Free-Space Laser Communication and Laser Imaging II
Jennifer C. Ricklin; David G. Voelz, Editor(s)

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