Phys. Rev. Lett. 89, 240401 (2002) [4 pages]Experimental Two-Photon, Three-Dimensional Entanglement for Quantum CommunicationReceived 21 June 2002; published 20 November 2002 Orbital angular momentum entangled photons emitted by a down-conversion source are in higher dimensional entangled states. Here we report the experimental confirmation by demonstrating a violation of a generalized Clauser-Horne-Shimony-Holt–type Bell inequality in three dimensions by more than 18 standard deviations. Higher dimensional entangled states allow the realization of new types of quantum communication protocols. They also provide a more secure quantum cryptography scheme. Therefore our experimental results are likely to have applications in future quantum communication technology. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.240401
DOI:
10.1103/PhysRevLett.89.240401
PACS:
03.65.Ud, 03.67.Hk, 42.50.Gy
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.