DOI: 10.1126/science.1172260 , 764 (2009); 324 Science et al. Scott B. Papp, One Photon Shared Among Four Optical Modes Characterization of Multipartite Entanglement for www.sciencemag.org (this information is current as of June 7, 2009 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/324/5928/764 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/324/5928/764/DC1 can be found at: Supporting Online Material http://www.sciencemag.org/cgi/content/full/324/5928/764#otherarticles , 3 of which can be accessed for free: cites 25 articles This article http://www.sciencemag.org/cgi/collection/physics Physics : subject collections This article appears in the following http://www.sciencemag.org/about/permissions.dtl in whole or in part can be found at: this article permission to reproduce of this article or about obtaining reprints Information about obtaining registered trademark of AAAS. is a Science 2009 by the American Association for the Advancement of Science; all rights reserved. The title Copyright American Association for the Advancement of Science, 1200 New York Avenue NW, Washington, DC 20005. (print ISSN 0036-8075; online ISSN 1095-9203) is published weekly, except the last week in December, by the Science on June 7, 2009 www.sciencemag.org Downloaded from