Six-photon entangled Dicke state enabled by a UV enhancement cavity as novel SPDC photon source

Autor(en)

Witlef Wieczorek, Roland Krischek, Akira Ozawa, Geza Toth, Nikolai Kiesel, Patrick Michelberger, Thomas Udem, Harald Weinfurter

Abstrakt

Photon sources for multi-photon entanglement experiments are commonly based on the process of spontaneous parametric down conversion. Due to the probabilistic photon production, such experiments suffer from low multiphoton count rates. To increase this count rate, we present a novel SPDC pump source based on a femtosecond UV enhancement cavity that increases the available pump power while maintaining a high repetition rate of 80MHz. We apply the cavity as photon source for realizing symmetric, multi-partite entangled Dicke states, which are observed with a high rate and high fidelity. We characterize the observed Dicke states of up to six photons using efficient tools exploiting the state's symmetries.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Max-Planck-Institut für Quantenoptik

Anzahl der Seiten

11

DOI

https://doi.org/10.1117/12.853599

Publikationsdatum

2010

ÖFOS 2012

103026 Quantenoptik, 103025 Quantenmechanik

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/26aebcd2-5fe8-46fd-a2ad-0e3ccf4e0809