Hyperentangled states and free-space quantum cryptography

Alexander V. Sergienko; Mete Atature; Giovanni Di Giuseppe; Gregg S. Jaeger; Bahaa E. A. Saleh; Malvin C. Teich

doi:10.1117/12.450941

9 December 2002 Hyper-entangled states and free-space quantum cryptography

Alexander V. Sergienko, Mete Atature, Giovanni Di Giuseppe, Gregg S. Jaeger, Bahaa E. A. Saleh, Malvin C. Teich

Proceedings Volume 4821, Free-Space Laser Communication and Laser Imaging II; (2002) https://doi.org/10.1117/12.450941
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

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.

Citation Download Citation

Alexander V. Sergienko, Mete Atature, Giovanni Di Giuseppe, Gregg S. Jaeger, Bahaa E. A. Saleh, and Malvin C. Teich "Hyper-entangled states and free-space quantum cryptography", Proc. SPIE 4821, Free-Space Laser Communication and Laser Imaging II, (9 December 2002); https://doi.org/10.1117/12.450941

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