Phys. Rev. A 78, 042321 (2008) [11 pages]Preparation and characterization of arbitrary states of four-dimensional qudits based on biphotonsSee Also: Erratum Received 30 July 2008; published 22 October 2008 We report interferometric schemes to prepare arbitrary states of four-dimensional qudits (ququarts) based on biphoton states of ultrafast-pumped frequency-nondegenerate spontaneous parametric down conversion. Preparation and tomographic characterization of a few examples of general single-ququart states, a pure state, a mixed state (fully diagonal), and a mixed state (partially coherent), are experimentally demonstrated. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.78.042321
DOI:
10.1103/PhysRevA.78.042321
PACS:
03.67.−a, 03.65.Wj, 42.50.Dv
See AlsoErratum: So-Young Baek, Stanislav S. Straupe, Alexander P. Shurupov, Sergei P. Kulik, and Yoon-Ho Kim, Erratum: Preparation and characterization of arbitrary states of four-dimensional qudits based on biphotons [Phys. Rev. A 78, 042321 (2008)], Phys. Rev. A 79, 049903 (2009). |
|
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.