Experimental access to higher-dimensional entangled quantum systems using integrated optics

Autor(en)

Christoph Schaeff, Robert Polster, Marcus Huber, Sven Ramelow, Anton Zeilinger

Abstrakt

Integrated optics allows for the generation and control of increasingly complex photonic states on chip-based architectures. Here, we implement two entangled qutrits-a nine-dimensional quantum system-and demonstrate an exceptionally high degree of experimental control. The approach, which is conceptually different to common bulk optical implementations, is heavily based on methods of integrated in-fiber and on-chip technologies and further motivated by methods commonly used in today's telecommunications industry. The system is composed of an in-fiber source creating entangled qutrit states of any amplitude and phase, and an on-chip integrated general Multiport enabling the realization of any desired local unitary transformation within the two qutrit nine-dimensional Hilbert space. The complete design is readily extendible toward higher dimensions with moderate increase in complexity. Ultimately, our scheme allows for complete on-chip integration. We demonstrate the flexibility and generality of our system by realizing a complete characterization of the two-qutrit space of higher-order Einstein-Podolsky-Rosen correlations.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Universitat Autònoma de Barcelona , The Institute of Photonic Sciences, Österreichische Akademie der Wissenschaften (ÖAW)

Journal

Optica

Band

2

Seiten

523-529

Anzahl der Seiten

7

ISSN

2334-2536

DOI

https://doi.org/10.1364/OPTICA.2.000523

Publikationsdatum

06-2015

Peer-reviewed

Ja

ÖFOS 2012

103026 Quantenoptik

Schlagwörter

ASJC Scopus Sachgebiete

Electronic, Optical and Magnetic Materials, Atomic and Molecular Physics, and Optics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/60a96ae3-4457-42c3-b8cd-b82c079a8f9e