Quantum Cryptography and Communications
Development of quantum cryptographically protected communication line in the open air and in the fiber.
Principles of quantum mechanics protect the signal from interception and duplication. Future applications are in the most secure communication lines for bank-to-ATM transactions, financial information protection over the internet, and government communications including the use for ship-to-ship, ground-to-satellite , and satellite-to-satellite communication.
Associated Publications:
Zachary D. Walton, Ayman F. Abouraddy, Alexander V. Sergienko, Bahaa E.A. Saleh, Malvin C. Teich "Decoherence-Free Subspaces in Quantum Key Distribution", Physical Review Letters, v. 91, 087901 (2003). [pdf]
G. S. Jaeger, M. Teodorescu-Frumosu, A. V. Sergienko, B. E. A. Saleh, and M. C. Teich "Multiphoton Stokes-Parameter Invariant for Entangled States", Physical Review A , v. 67, 032307 (2003). [pdf]
Z. Walton, A. V. Sergienko, M. Atature, B. E. A. Saleh, and M. C. Teich "Performance of Photon-Pair Quantum Key Distribution Systems", quant-ph/0103145, to be published in Journal of Modern Optics (2001) . [pdf]
A. V. Sergienko, M. Atature, B. M. Jost, J. Perina Jr., B. E. A. Saleh, and M. C. Teich "Quantum Cryptography With Femtosecond Parametric Down-Conversion", in Proceedings of the 4 Internatinal Conference on Quantum Communication, Computing, and Measurement Evanston, Illinois August 22-27, (1998), ed. by P. Kumar, G. M. D'ariano, and O. Hirota, (Kluver Academic/Plenum Publishers, New York 2000). [pdf]
"Optimal distinction between two non-orthogonal quantum states," Gregg Jaeger and Abner Shimony, Physics Letters A 197 (1995) 83.
Summary: an optimum measure of distinguishability between pairs of non-orthogonal quantum states was found, having implications for quantum signal analysis and communication.
Recent presentations: