Die u:cris Detailansicht:
Cyclic transformation of orbital angular momentum modes
- Autor(en)
- Florian Schlederer, Mario Krenn, Robert Fickler, Mehul Malik, Anton Zeilinger
- Abstrakt
The spatial modes of photons are one realization of a QuDit, a quantum system that is described in a D-dimensional Hilbert space. In order to perform quantum information tasks with QuDits, a general class of D-dimensional unitary transformations is needed. Among these, cyclic transformations are an important special case required in many high-dimensional quantum communication protocols. In this paper, we experimentally demonstrate a cyclic transformation in the high-dimensional space of photonic orbital angular momentum (OAM). Using simple linear optical components, we show a successful four-fold cyclic transformation of OAM modes. Interestingly, our experimental setup was found by a computer algorithm. In addition to the four-cyclic transformation, the algorithm also found extensions to higher-dimensional cycles in a hybrid space of OAM and polarization. Besides being useful for quantum cryptography with QuDits, cyclic transformations are key for the experimental production of high-dimensional maximally entangled Bell-states.
- Organisation(en)
- Quantenoptik, Quantennanophysik und Quanteninformation
- Externe Organisation(en)
- Österreichische Akademie der Wissenschaften (ÖAW), University of Ottawa
- Journal
- New Journal of Physics
- Band
- 18
- Anzahl der Seiten
- 8
- ISSN
- 1367-2630
- DOI
- https://doi.org/10.1088/1367-2630/18/4/043019
- Publikationsdatum
- 04-2016
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103026 Quantenoptik
- Schlagwörter
- ASJC Scopus Sachgebiete
- Allgemeine Physik und Astronomie
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/ee0e85ac-0892-4fea-a1b5-52cf6bc73caf