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.
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    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]

    Gregg Jaeger, Alexander V. Sergienko, Bahaa E. A. Saleh, Malvin C. Teich "Entanglement, Mixedness, and Spin-Flip Symmetry in Multiple-Qubit System", Physical Review A, v. 68, 022318 (2003). [pdf]

    Z. D. Walton, A. F. Abouraddy, A. V. Sergienko, B. E. A. Saleh, M. C. Teich "One-Way Entangled-Photon Autocompensating Quantum Cryptography", Physical Review A, v. 67, 062309 (2003). [pdf]

    Z. D. Walton, M. C. Booth, A. V. Sergienko, B. E. A. Saleh, M. C. Teich "Controllable Frequency Entanglement via Auto-Phase-Matched Spontaneous Parametric Down-Conversion", Physical Review A, v. 67, 053810 (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, Z. Walton, G. Jaeger, B. E. A. Saleh, and M. C. Teich "Quantum Cryptography Using Femtosecond-Pulsed Parametric Down-Conversion", Physical Review A , v. 60, pp. R2622-R2625 (1999). [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:

    "Entangled Photon Quantum Cryptography," Gregg Jaeger, Symposium on the Physics of Information, Brussels 17.12.98 .

     

    References